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Probability and Statistics Questions and Answers – Testing of Hypothesis

This set of Probability and Statistics Multiple Choice Questions & Answers (MCQs) focuses on “Testing of Hypothesis”.

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Doing Research in the Real World

Student resources, multiple choice quiz.

Take the quiz to test your understanding of the key concepts covered in the chapter. Try testing yourself before you read the chapter to see where your strengths and weaknesses are, then test yourself again once you’ve read the chapter to see how well you’ve understood.

Tip: Click on each link to expand and view the content. Click again to collapse.

PART A: PRINCIPLES AND PLANNING FOR RESEARCH

1. Which of the following should not be a criterion for a good research project?

• Demonstrates the abilities of the researcher
• Is dependent on the completion of other projects
• Demonstrates the integration of different fields of knowledge
• Develops the skills of the researcher

b.  Is dependent on the completion of other projects

2. Which form of reasoning is the process of drawing a specific conclusion from a set of premises?

• Objective reasoning
• Positivistic reasoning
• Inductive reasoning
• Deductive reasoning

d:  Deductive reasoning

3. Research that seeks to examine the findings of a study by using the same design but a different sample is which of the following?

• An exploratory study
• A replication study
• An empirical study
• Hypothesis testing

b:  A replication study

4. A researcher designs an experiment to test how variables interact to influence job-seeking behaviours. The main purpose of the study was:

• Description
• Exploration
• Explanation

d:  Explanation

5. Cyber bullying at work is a growing threat to employee job satisfaction. Researchers want to find out why people do this and how they feel about it. The primary purpose of the study is:

c:  Exploration

6. A theory: 

• Is an accumulated body of knowledge
• Includes inconsequential ideas
• Is independent of research methodology
• Should be viewed uncritically

a:  Is an accumulated body of knowledge

7. Which research method is a bottom-up approach to research?

• Deductive method
• Explanatory method
• Inductive method
• Exploratory method

c:  Inductive method

8. How much confidence should you place in a single research study?

• You should trust research findings after different researchers have replicated the findings
• You should completely trust a single research study
• Neither a nor b
• Both a and b 

a:  You should trust research findings after different researchers have replicated the findings

9. A qualitative research problem statement:

• Specifies the research methods to be utilized
• Specifies a research hypothesis
• Expresses a relationship between variables
• Conveys a sense of emerging design

d:  Conveys a sense of emerging design

10. Which of the following is a good research question?

• To produce a report on student job searching behaviours
• To identify the relationship between self-efficacy and student job searching behaviours
• Students with higher levels of self-efficacy will demonstrate more active job searching behaviours
• Do students with high levels of self-efficacy demonstrate more active job searching behaviours?

d:  Do students with high levels of self-efficacy demonstrate more active job searching behaviours?

11. A review of the literature prior to formulating research questions allows the researcher to :

• Provide an up-to-date understanding of the subject, its significance, and structure
• Guide the development of research questions
• Present the kinds of research methodologies used in previous studies
• All of the above

d:  All of the above

12. Sometimes a comprehensive review of the literature prior to data collection is not recommended by:

• Ethnomethodology
• Grounded theory
• Symbolic interactionism
• Feminist theory

b:  Grounded theory

13. The feasibility of a research study should be considered in light of: 

• Cost and time required to conduct the study
• Access to gatekeepers and respondents
• Potential ethical concerns

14. Research that uses qualitative methods for one phase and quantitative methods for the next phase is known as:

• Action research
• Mixed-method research
• Quantitative research
• Pragmatic research

b:  Mixed-method research

15. Research hypotheses are:

• Formulated prior to a review of the literature
• Statements of predicted relationships between variables
• B but not A
• Both A and B

c:  B but not A

16. Which research approach is based on the epistemological viewpoint of pragmatism? 

• Qualitative research
• Mixed-methods research

c:  Mixed-methods research

17. Adopting ethical principles in research means: 

• Avoiding harm to participants
• The researcher is anonymous
• Deception is only used when necessary
• Selected informants give their consent

a:  Avoiding harm to participants

18. A radical perspective on ethics suggests that: 

• Researchers can do anything they want
• The use of checklists of ethical actions is essential
• The powers of Institutional Review Boards should be strengthened
• Ethics should be based on self-reflexivity

d:  Ethics should be based on self-reflexivity

19. Ethical problems can arise when researching the Internet because:

• Everyone has access to digital media
• Respondents may fake their identities
• Researchers may fake their identities
• Internet research has to be covert

b:  Respondents may fake their identities

20. The Kappa statistic: 

• Is a measure of inter-judge validity
• Compares the level of agreement between two judges against what might have been predicted by chance
• Ranges from 0 to +1
• Is acceptable above a score of 0.5

b:  Compares the level of agreement between two judges against what might have been predicted by chance

PART B: RESEARCH METHODOLOGY  

1. Which research paradigm is most concerned about generalizing its findings? 

a:  Quantitative research

2. A variable that is presumed to cause a change in another variable is called:

• An intervening variable
• A dependent variable
• An independent variable
• A numerical variable

c:  An independent variable

3. A study of teaching professionals posits that their performance-related pay increases their motivation which in turn leads to an increase in their job satisfaction. What kind of variable is ‘motivation”’ in this study? 

• Extraneous 
• Confounding
• Intervening
• Manipulated

c:  Intervening

4. Which correlation is the strongest? 

5. When interpreting a correlation coefficient expressing the relationship between two variables, it is important not to:

• Assume causality
• Measure the values for X and Y independently
• Choose X and Y values that are normally distributed
• Check the direction of the relationship

a:  Assume causality

6. Which of the following can be described as a nominal variable? 

• Annual income
• Annual sales
• Geographical location of a firm

d:  Geographical location of a firm

7. A positive correlation occurs when:

• Two variables remain constant
• Two variables move in the same direction
• One variable goes up and the other goes down
• Two variables move in opposite directions

b:  Two variables move in the same direction

8. The key defining characteristic of experimental research is that:

• The independent variable is manipulated
• Hypotheses are proved
• A positive correlation exists
• Samples are large

a:  The independent variable is manipulated

9. Qualitative research is used in all the following circumstances, EXCEPT:

• It is based on a collection of non-numerical data such as words and pictures
• It often uses small samples
• It uses the inductive method
• It is typically used when a great deal is already known about the topic of interest

d:  It is typically used when a great deal is already known about the topic of interest

10. In an experiment, the group that does not receive the intervention is called:

• The experimental group
• The participant group
• The control group
• The treatment group

c:  The control group

11. Which generally cannot be guaranteed in conducting qualitative studies in the field? 

• Keeping participants from physical and emotional harm
• Gaining informed consent
• Assuring anonymity rather than just confidentiality
• Maintaining consent forms

c:  Assuring anonymity rather than just confidentiality

12. Which of the following is not ethical practice in research with humans? 

• Maintaining participants’ anonymity
• Informing participants that they are free to withdraw at any time
• Requiring participants to continue until the study has been completed

d:  Requiring participants to continue until the study has been completed

13. What do we call data that are used for a new study but which were collected by an earlier researcher for a different set of research questions?

• Secondary data
• Field notes
• Qualitative data
• Primary data

a:  Secondary data

14. When each member of a population has an equal chance of being selected, this is called:

• A snowball sample
• A stratified sample
• A random probability sample
• A non-random sample

c:  A random probability sample

15. Which of the following techniques yields a simple random sample of hospitals?

• Randomly selecting a district and then sampling all hospitals within the district
• Numbering all the elements of a hospital sampling frame and then using a random number generator to pick hospitals from the table
• Listing hospitals by sector and choosing a proportion from within each sector at random
• Choosing volunteer hospitals to participate

b:  Numbering all the elements of a hospital sampling frame and then using a random number generator to pick hospitals from the table

16. Which of the following statements are true?

• The larger the sample size, the larger the confidence interval
• The smaller the sample size, the greater the sampling error
• The more categories being measured, the smaller the sample size
• A confidence level of 95 percent is always sufficient

b:  The smaller the sample size, the greater the sampling error

17. Which of the following will produce the least sampling error?

• A large sample based on convenience sampling 
• A small sample based on random sampling
• A large snowball sample
• A large sample based on random sampling

d:  A large sample based on random sampling

18. When people are readily available, volunteer, or are easily recruited to the sample, this is called:

• Snowball sampling
• Convenience sampling
• Stratified sampling
• Random sampling

b:  Convenience sampling

19. In qualitative research, sampling that involves selecting diverse cases is referred to as:

• Typical-case sampling
• Critical-case sampling
• Intensity sampling
• Maximum variation sampling

d:  Maximum variation sampling

20. A test accurately indicates an employee’s scores on a future criterion (e.g., conscientiousness).  What kind of validity is this?

a:  Predictive

PART C: DATA COLLECTION METHODS  

1. When designing a questionnaire it is important to do each of the following EXCEPT

• Pilot the questionnaire
• Avoid jargon
• Avoid double questions
• Use leading questions

d:  Use leading questions

2. One advantage of using a questionnaire is that:

• Probe questions can be asked
• Respondents can be put at ease
• Interview bias can be avoided
• Response rates are always high

c:  Interview bias can be avoided

3. Which of the following is true of observations?

• It takes less time than interviews
• It is often not possible to determine exactly why people behave as they do
• Covert observation raises fewer ethical concerns than overt

b:  It is often not possible to determine exactly why people behave as they do

4. A researcher secretly becomes an active member of a group in order to observe their behaviour. This researcher is acting as:

• An overt participant observer
• A covert non-participant observer
• A covert participant observer
• None of the above

c:  A covert participant observer

5. All of the following are advantages of structured observation, EXCEPT:

• Results can be replicated at a different time
• The coding schedule might impose a framework on what is being observed
• Data can be collected that participants may not realize is important
• Data do not have to rely on the recall of participants

b:  The coding schedule might impose a framework on what is being observed

6. When conducting an interview, asking questions such as: "What else? or ‘Could you expand on that?’ are all forms of:

• Structured responses
• Category questions

7. Secondary data can include which of the following? 

• Government statistics
• Personal diaries
• Organizational records

8. An ordinal scale is:

• The simplest form of measurement
• A scale with an absolute zero point
• A rank-order scale of measurement
• A scale with equal intervals between ranks

c:  A rank-order scale of measurement

9. Which term measures the extent to which scores from a test can be used to infer or predict performance in some activity? 

• Face validity
• Content reliability
• Criterion-related validity
• Construct validity

c:  Criterion-related validity

10. The ‘reliability’of a measure refers to the researcher asking:

• Does it give consistent results?
• Does it measure what it is supposed to measure?
• Can the results be generalized?
• Does it have face reliability?

a:  Does it give consistent results?

11. Interviewing is the favoured approach EXCEPT when:

• There is a need for highly personalized data
• It is important to ask supplementary questions
• High numbers of respondents are needed
• Respondents have difficulty with written language

c:  High numbers of respondents are needed

12. Validity in interviews is strengthened by the following EXCEPT:

• Building rapport with interviewees
• Multiple questions cover the same theme
• Constructing interview schedules that contain themes drawn from the literature
• Prompting respondents to expand on initial responses

b:  Multiple questions cover the same theme

13. Interview questions should:

• Lead the respondent
• Probe sensitive issues
• Be delivered in a neutral tone
• Test the respondents’ powers of memory

c:  Be delivered in a neutral tone

14. Active listening skills means:

• Asking as many questions as possible
• Avoiding silences
• Keeping to time
• Attentive listening

d:  Attentive listening

15. All the following are strengths of focus groups EXCEPT:

• They allow access to a wide range of participants
• Discussion allows for the validation of ideas and views
• They can generate a collective perspective
• They help maintain confidentiality

d:  They help maintain confidentiality

16. Which of the following is not always true about focus groups?

• The ideal size is normally between 6 and 12 participants
• Moderators should introduce themselves to the group
• Participants should come from diverse backgrounds
• The moderator poses preplanned questions

c:  Participants should come from diverse backgrounds

17. A disadvantage of using secondary data is that:

• The data may have been collected with reference to research questions that are not those of the researcher
• The researcher may bring more detachment in viewing the data than original researchers could muster
• Data have often been collected by teams of experienced researchers
• Secondary data sets are often available and accessible

a:  The data may have been collected with reference to research questions that are not those of the researcher

18. All of the following are sources of secondary data EXCEPT:

• Official statistics
• A television documentary
• The researcher’s research diary
• A company’s annual report

c:  The researcher’s research diary

19. Which of the following is not true about visual methods?

• They are not reliant on respondent recall
• The have low resource requirements
• They do not rely on words to capture what is happening
• They can capture what is happening in real time

b:  The have low resource requirements

20. Avoiding naïve empiricism in the interpretation of visual data means:

• Understanding the context in which they were produced
• Ensuring that visual images such as photographs are accurately taken
• Only using visual images with other data gathering sources
• Planning the capture of visual data carefully

a:  Understanding the context in which they were produced

PART D: ANALYSIS AND REPORT WRITING  

1. Which of the following is incorrect when naming a variable in SPSS?

• Must begin with a letter and not a number
• Must end in a full stop
• Cannot exceed 64 characters
• Cannot include symbols such as ?, & and %

b:  Must end in a full stop

2. Which of the following is not an SPSS Type variable?

3. A graph that uses vertical bars to represent data is called:

• A bar chart
• A pie chart
• A line graph
• A vertical graph

a:  A bar chart

4. The purpose of descriptive statistics is to:

• Summarize the characteristics of a data set
• Draw conclusions from the data

a:  Summarize the characteristics of a data set

5. The measure of the extent to which responses vary from the mean is called:

• The normal distribution
• The standard deviation
• The variance

c:  The standard deviation

6. To compare the performance of a group at time T1 and then at T2, we would use:

• A chi-squared test
• One-way analysis of variance
• Analysis of variance
• A paired t-test

d:  A paired t-test

7. A Type 1 error occurs in a situation where:

• The null hypothesis is accepted when it is in fact true
• The null hypothesis is rejected when it is in fact false
• The null hypothesis is rejected when it is in fact true
• The null hypothesis is accepted when it is in fact false

c:  The null hypothesis is rejected when it is in fact true

8. The significance level

• Is set after a statistical test is conducted
• Is always set at 0.05
• Results in a p -value
• Measures the probability of rejecting a true null hypothesis

d:  Measures the probability of rejecting a true null hypothesis

9. To predict the value of the dependent variable for a new case based on the knowledge of one or more independent variables, we would use

• Regression analysis
• Correlation analysis
• Kolmogorov-Smirnov test

a:  Regression analysis

10. In conducting secondary data analysis, researchers should ask themselves all of the following EXCEPT:

• Who produced the document?
• Is the material genuine?
• How can respondents be re-interviewed?
• Why was the document produced?

c:  How can respondents be re-interviewed?

11. Which of the following are not true of reflexivity?

• It recognizes that the researcher is not a neutral observer
• It has mainly been applied to the analysis of qualitative data
• It is part of a post-positivist tradition
• A danger of adopting a reflexive stance is the researcher can become the focus of the study

c:  It is part of a post-positivist tradition

12. Validity in qualitative research can be strengthened by all of the following EXCEPT:

• Member checking for accuracy and interpretation
• Transcribing interviews to improve accuracy of data
• Exploring rival explanations
• Analysing negative cases

b:  Transcribing interviews to improve accuracy of data

13. Qualitative data analysis programs are useful for each of the following EXCEPT: 

• Manipulation of large amounts of data
• Exploring of the data against new dimensions
• Querying of data
• Generating codes

d:  Generating codes

14. Which part of a research report contains details of how the research was planned and conducted?

• Introduction

b:  Design 

15. Which of the following is a form of research typically conducted by managers and other professionals to address issues in their organizations and/or professional practice?

• Basic research
• Professional research
• Predictive research

a:  Action research

16. Plagiarism can be avoided by:

• Copying the work of others accurately
• Paraphrasing the author’s text in your own words
• Cut and pasting from the Internet
• Quoting directly without revealing the source

b:  Paraphrasing the author’s text in your own words

17. In preparing for a presentation, you should do all of the following EXCEPT:

• Practice the presentation
• Ignore your nerves
• Get to know more about your audience
• Take an advanced look, if possible, at the facilities

b:  Ignore your nerves

18. You can create interest in your presentation by:

• Using bullet points
• Reading from notes
• Maximizing the use of animation effects
• Using metaphors

d:  Using metaphors

19. In preparing for a viva or similar oral examination, it is best if you have:

• Avoided citing the examiner in your thesis
• Made exaggerated claims on the basis of your data
• Published and referenced your own article(s)
• Tried to memorize your work

c:  Published and referenced your own article(s)

20. Grounded theory coding:

• Makes use of a priori concepts from the literature
• Uses open coding, selective coding, then axial coding
• Adopts a deductive stance
• Stops when theoretical saturation has been reached

d:  Stops when theoretical saturation has been reached

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Multiple Choice Questions on Research Methodology

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Research Methodology

• Introduction to Research Methodology
• Research Approaches
• Concepts of Theory and Empiricism
• Characteristics of scientific method
• Understanding the Language of Research
• 11 Steps in Research Process
• Research Design
• Different Research Designs
• Compare and Contrast the Main Types of Research Designs
• Cross-sectional research design
• Qualitative and Quantitative Research
• Descriptive Research VS Qualitative Research
• Experimental Research VS Quantitative Research
• Sampling Design
• Probability VS Non-Probability Sampling
• 40 MCQ on Research Methodology

MCQ on research Process

• MCQ on Research Design
• 18 MCQ on Quantitative Research
• 30 MCQ on Qualitative Research
• 45 MCQ on Sampling Methods
• 20 MCQ on Principles And Planning For Research

Q1. What is the first step in the research process?

A) Data analysis

B) Literature review

C) Hypothesis testing

D) Research design

Answer: B) Literature review

Q2. What is the purpose of a research hypothesis?

A) To summarize the research findings

B) To explain the research methodology

C) To predict the outcome of the research

D) To describe the research participant

Answer: C) To predict the outcome of the research

Q3. What is the purpose of formulating a research problem in operational terms?

a) To narrow down the scope of the problem

b) To make the problem more complex

c) To make the problem less specific

d) To discriminate relevant data from irrelevant ones

Answer: d) To discriminate relevant data from irrelevant ones

Q4. What is the purpose of replicating a research study?

a) To confirm that the hypothesis is incorrect

b) To prove that the study was flawed

c) To support the contention that the hypothesis cannot be rejected

d) To provide an opportunity to alter the hypothesis

Answer: c) To support the contention that the hypothesis cannot be rejected

Q5. The research process is:

a) a system of interrelated activities

b) a linear process with no interdependencies

c) a static process with fixed stages

d) a process that can be skipped or altered without consequences

Answer: a) a system of interrelated activities

Q6. Which stage of the research process involves formulating a hypothesis?

b) Stage II

c) Stage III

d) Stage IV

Answer: b) Stage III

Q7. What is a dependent variable in a research study?

A) A variable that is manipulated by the researcher

B) A variable that is not affected by other variables

C) A variable that is measured or observed in response to the independent variable

D) A variable that is controlled by the research participants

Answer: C) A variable that is measured or observed in response to the independent variable

Q8. What is the purpose of data analysis in the research process?

A)To collect data from research participants

B) To test the research hypothesis

C) To review the existing literature

D) To design the research study

Answer: B) To test the research hypothesis

Q9. What is a random sample?

A) A sample selected based on a specific criterion

B) A sample selected using a random process

C) A sample selected based on convenience

D) A sample selected based on the researcher’s judgment

Answer: B) A sample selected using a random process

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The Craft of Writing a Strong Hypothesis

Table of Contents

Writing a hypothesis is one of the essential elements of a scientific research paper. It needs to be to the point, clearly communicating what your research is trying to accomplish. A blurry, drawn-out, or complexly-structured hypothesis can confuse your readers. Or worse, the editor and peer reviewers.

A captivating hypothesis is not too intricate. This blog will take you through the process so that, by the end of it, you have a better idea of how to convey your research paper's intent in just one sentence.

What is a Hypothesis?

The first step in your scientific endeavor, a hypothesis, is a strong, concise statement that forms the basis of your research. It is not the same as a thesis statement , which is a brief summary of your research paper .

The sole purpose of a hypothesis is to predict your paper's findings, data, and conclusion. It comes from a place of curiosity and intuition . When you write a hypothesis, you're essentially making an educated guess based on scientific prejudices and evidence, which is further proven or disproven through the scientific method.

The reason for undertaking research is to observe a specific phenomenon. A hypothesis, therefore, lays out what the said phenomenon is. And it does so through two variables, an independent and dependent variable.

The independent variable is the cause behind the observation, while the dependent variable is the effect of the cause. A good example of this is “mixing red and blue forms purple.” In this hypothesis, mixing red and blue is the independent variable as you're combining the two colors at your own will. The formation of purple is the dependent variable as, in this case, it is conditional to the independent variable.

Different Types of Hypotheses‌

Types of hypotheses

Some would stand by the notion that there are only two types of hypotheses: a Null hypothesis and an Alternative hypothesis. While that may have some truth to it, it would be better to fully distinguish the most common forms as these terms come up so often, which might leave you out of context.

Apart from Null and Alternative, there are Complex, Simple, Directional, Non-Directional, Statistical, and Associative and casual hypotheses. They don't necessarily have to be exclusive, as one hypothesis can tick many boxes, but knowing the distinctions between them will make it easier for you to construct your own.

1. Null hypothesis

A null hypothesis proposes no relationship between two variables. Denoted by H 0 , it is a negative statement like “Attending physiotherapy sessions does not affect athletes' on-field performance.” Here, the author claims physiotherapy sessions have no effect on on-field performances. Even if there is, it's only a coincidence.

2. Alternative hypothesis

Considered to be the opposite of a null hypothesis, an alternative hypothesis is donated as H1 or Ha. It explicitly states that the dependent variable affects the independent variable. A good  alternative hypothesis example is “Attending physiotherapy sessions improves athletes' on-field performance.” or “Water evaporates at 100 °C. ” The alternative hypothesis further branches into directional and non-directional.

• Directional hypothesis: A hypothesis that states the result would be either positive or negative is called directional hypothesis. It accompanies H1 with either the ‘<' or ‘>' sign.
• Non-directional hypothesis: A non-directional hypothesis only claims an effect on the dependent variable. It does not clarify whether the result would be positive or negative. The sign for a non-directional hypothesis is ‘≠.'

3. Simple hypothesis

A simple hypothesis is a statement made to reflect the relation between exactly two variables. One independent and one dependent. Consider the example, “Smoking is a prominent cause of lung cancer." The dependent variable, lung cancer, is dependent on the independent variable, smoking.

4. Complex hypothesis

In contrast to a simple hypothesis, a complex hypothesis implies the relationship between multiple independent and dependent variables. For instance, “Individuals who eat more fruits tend to have higher immunity, lesser cholesterol, and high metabolism.” The independent variable is eating more fruits, while the dependent variables are higher immunity, lesser cholesterol, and high metabolism.

5. Associative and casual hypothesis

Associative and casual hypotheses don't exhibit how many variables there will be. They define the relationship between the variables. In an associative hypothesis, changing any one variable, dependent or independent, affects others. In a casual hypothesis, the independent variable directly affects the dependent.

6. Empirical hypothesis

Also referred to as the working hypothesis, an empirical hypothesis claims a theory's validation via experiments and observation. This way, the statement appears justifiable and different from a wild guess.

Say, the hypothesis is “Women who take iron tablets face a lesser risk of anemia than those who take vitamin B12.” This is an example of an empirical hypothesis where the researcher  the statement after assessing a group of women who take iron tablets and charting the findings.

7. Statistical hypothesis

The point of a statistical hypothesis is to test an already existing hypothesis by studying a population sample. Hypothesis like “44% of the Indian population belong in the age group of 22-27.” leverage evidence to prove or disprove a particular statement.

Characteristics of a Good Hypothesis

Writing a hypothesis is essential as it can make or break your research for you. That includes your chances of getting published in a journal. So when you're designing one, keep an eye out for these pointers:

• A research hypothesis has to be simple yet clear to look justifiable enough.
• It has to be testable — your research would be rendered pointless if too far-fetched into reality or limited by technology.
• It has to be precise about the results —what you are trying to do and achieve through it should come out in your hypothesis.
• A research hypothesis should be self-explanatory, leaving no doubt in the reader's mind.
• If you are developing a relational hypothesis, you need to include the variables and establish an appropriate relationship among them.
• A hypothesis must keep and reflect the scope for further investigations and experiments.

Separating a Hypothesis from a Prediction

Outside of academia, hypothesis and prediction are often used interchangeably. In research writing, this is not only confusing but also incorrect. And although a hypothesis and prediction are guesses at their core, there are many differences between them.

A hypothesis is an educated guess or even a testable prediction validated through research. It aims to analyze the gathered evidence and facts to define a relationship between variables and put forth a logical explanation behind the nature of events.

Predictions are assumptions or expected outcomes made without any backing evidence. They are more fictionally inclined regardless of where they originate from.

For this reason, a hypothesis holds much more weight than a prediction. It sticks to the scientific method rather than pure guesswork. "Planets revolve around the Sun." is an example of a hypothesis as it is previous knowledge and observed trends. Additionally, we can test it through the scientific method.

Whereas "COVID-19 will be eradicated by 2030." is a prediction. Even though it results from past trends, we can't prove or disprove it. So, the only way this gets validated is to wait and watch if COVID-19 cases end by 2030.

Finally, How to Write a Hypothesis

Quick tips on writing a hypothesis

1.  Be clear about your research question

A hypothesis should instantly address the research question or the problem statement. To do so, you need to ask a question. Understand the constraints of your undertaken research topic and then formulate a simple and topic-centric problem. Only after that can you develop a hypothesis and further test for evidence.

2. Carry out a recce

Once you have your research's foundation laid out, it would be best to conduct preliminary research. Go through previous theories, academic papers, data, and experiments before you start curating your research hypothesis. It will give you an idea of your hypothesis's viability or originality.

Making use of references from relevant research papers helps draft a good research hypothesis. SciSpace Discover offers a repository of over 270 million research papers to browse through and gain a deeper understanding of related studies on a particular topic. Additionally, you can use SciSpace Copilot , your AI research assistant, for reading any lengthy research paper and getting a more summarized context of it. A hypothesis can be formed after evaluating many such summarized research papers. Copilot also offers explanations for theories and equations, explains paper in simplified version, allows you to highlight any text in the paper or clip math equations and tables and provides a deeper, clear understanding of what is being said. This can improve the hypothesis by helping you identify potential research gaps.

3. Create a 3-dimensional hypothesis

Variables are an essential part of any reasonable hypothesis. So, identify your independent and dependent variable(s) and form a correlation between them. The ideal way to do this is to write the hypothetical assumption in the ‘if-then' form. If you use this form, make sure that you state the predefined relationship between the variables.

In another way, you can choose to present your hypothesis as a comparison between two variables. Here, you must specify the difference you expect to observe in the results.

4. Write the first draft

Now that everything is in place, it's time to write your hypothesis. For starters, create the first draft. In this version, write what you expect to find from your research.

Clearly separate your independent and dependent variables and the link between them. Don't fixate on syntax at this stage. The goal is to ensure your hypothesis addresses the issue.

5. Proof your hypothesis

After preparing the first draft of your hypothesis, you need to inspect it thoroughly. It should tick all the boxes, like being concise, straightforward, relevant, and accurate. Your final hypothesis has to be well-structured as well.

Research projects are an exciting and crucial part of being a scholar. And once you have your research question, you need a great hypothesis to begin conducting research. Thus, knowing how to write a hypothesis is very important.

Now that you have a firmer grasp on what a good hypothesis constitutes, the different kinds there are, and what process to follow, you will find it much easier to write your hypothesis, which ultimately helps your research.

Now it's easier than ever to streamline your research workflow with SciSpace Discover . Its integrated, comprehensive end-to-end platform for research allows scholars to easily discover, write and publish their research and fosters collaboration.

It includes everything you need, including a repository of over 270 million research papers across disciplines, SEO-optimized summaries and public profiles to show your expertise and experience.

If you found these tips on writing a research hypothesis useful, head over to our blog on Statistical Hypothesis Testing to learn about the top researchers, papers, and institutions in this domain.

Frequently Asked Questions (FAQs)

1. what is the definition of hypothesis.

According to the Oxford dictionary, a hypothesis is defined as “An idea or explanation of something that is based on a few known facts, but that has not yet been proved to be true or correct”.

2. What is an example of hypothesis?

The hypothesis is a statement that proposes a relationship between two or more variables. An example: "If we increase the number of new users who join our platform by 25%, then we will see an increase in revenue."

3. What is an example of null hypothesis?

A null hypothesis is a statement that there is no relationship between two variables. The null hypothesis is written as H0. The null hypothesis states that there is no effect. For example, if you're studying whether or not a particular type of exercise increases strength, your null hypothesis will be "there is no difference in strength between people who exercise and people who don't."

4. What are the types of research?

• Fundamental research

• Applied research

• Qualitative research

• Quantitative research

• Mixed research

• Exploratory research

• Longitudinal research

• Cross-sectional research

• Field research

• Laboratory research

• Fixed research

• Flexible research

• Action research

• Policy research

• Classification research

• Comparative research

• Causal research

• Inductive research

• Deductive research

5. How to write a hypothesis?

• Your hypothesis should be able to predict the relationship and outcome.

• Avoid wordiness by keeping it simple and brief.

• Your hypothesis should contain observable and testable outcomes.

• Your hypothesis should be relevant to the research question.

6. What are the 2 types of hypothesis?

• Null hypotheses are used to test the claim that "there is no difference between two groups of data".

• Alternative hypotheses test the claim that "there is a difference between two data groups".

7. Difference between research question and research hypothesis?

A research question is a broad, open-ended question you will try to answer through your research. A hypothesis is a statement based on prior research or theory that you expect to be true due to your study. Example - Research question: What are the factors that influence the adoption of the new technology? Research hypothesis: There is a positive relationship between age, education and income level with the adoption of the new technology.

8. What is plural for hypothesis?

The plural of hypothesis is hypotheses. Here's an example of how it would be used in a statement, "Numerous well-considered hypotheses are presented in this part, and they are supported by tables and figures that are well-illustrated."

9. What is the red queen hypothesis?

The red queen hypothesis in evolutionary biology states that species must constantly evolve to avoid extinction because if they don't, they will be outcompeted by other species that are evolving. Leigh Van Valen first proposed it in 1973; since then, it has been tested and substantiated many times.

10. Who is known as the father of null hypothesis?

The father of the null hypothesis is Sir Ronald Fisher. He published a paper in 1925 that introduced the concept of null hypothesis testing, and he was also the first to use the term itself.

11. When to reject null hypothesis?

You need to find a significant difference between your two populations to reject the null hypothesis. You can determine that by running statistical tests such as an independent sample t-test or a dependent sample t-test. You should reject the null hypothesis if the p-value is less than 0.05.

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What is a Hypothesis?

Table of Contents

Defining the hypothesis, the role of a hypothesis in the scientific method, types of hypotheses, hypothesis formulation, hypotheses and variables.

• The Importance of Testing Hypotheses
• The Hypothesis and Sociological Theory

In sociology, as in other scientific disciplines, the hypothesis serves as a crucial building block for research. It is a central element that directs the inquiry and provides a framework for testing the relationships between social phenomena. This article will explore what a hypothesis is, how it is formulated, and its role within the broader scientific method. By understanding the hypothesis, students of sociology can grasp how sociologists construct and test theories about the social world.

A hypothesis is a specific, testable statement about the relationship between two or more variables. It acts as a proposed explanation or prediction based on limited evidence, which researchers then test through empirical investigation. In essence, it is a statement that can be supported or refuted by data gathered from observation, experimentation, or other forms of systematic inquiry. The hypothesis typically takes the form of an “if-then” statement: if one variable changes, then another will change in response.

In sociological research, a hypothesis helps to focus the investigation by offering a clear proposition that can be tested. For instance, a sociologist might hypothesize that an increase in education levels leads to a decrease in crime rates. This hypothesis gives the researcher a direction, guiding them to collect data on education and crime, and analyze the relationship between the two variables. By doing so, the hypothesis serves as a tool for making sense of complex social phenomena.

The hypothesis is a key component of the scientific method, which is the systematic process by which sociologists and other scientists investigate the world. The scientific method begins with an observation of the world, followed by the formulation of a question or problem. Based on prior knowledge, theory, or preliminary observations, researchers then develop a hypothesis, which predicts an outcome or proposes a relationship between variables.

Once a hypothesis is established, researchers gather data to test it. If the data supports the hypothesis, it may be used to build a broader theory or to further refine the understanding of the social phenomenon in question. If the data contradicts the hypothesis, researchers may revise their hypothesis or abandon it altogether, depending on the strength of the evidence. In either case, the hypothesis helps to organize the research process, ensuring that it remains focused and methodologically sound.

In sociology, this method is particularly important because the social world is highly complex. Researchers must navigate a vast range of variables—age, gender, class, race, education, and countless others—that interact in unpredictable ways. A well-constructed hypothesis allows sociologists to narrow their focus to a manageable set of variables, making the investigation more precise and efficient.

Sociologists use different types of hypotheses, depending on the nature of their research question and the methods they plan to use. Broadly speaking, hypotheses can be classified into two main types: null hypotheses and alternative (or research) hypotheses.

Null Hypothesis

The null hypothesis, denoted as H0, states that there is no relationship between the variables being studied. It is a default assumption that any observed differences or relationships are due to random chance rather than a real underlying cause. In research, the null hypothesis serves as a point of comparison. Researchers collect data to see if the results allow them to reject the null hypothesis in favor of an alternative explanation.

For example, a sociologist studying the relationship between income and political participation might propose a null hypothesis that income has no effect on political participation. The goal of the research would then be to determine whether this null hypothesis can be rejected based on the data. If the data shows a significant correlation between income and political participation, the null hypothesis would be rejected.

Alternative Hypothesis

The alternative hypothesis, denoted as H1 or Ha, proposes that there is a significant relationship between the variables. This is the hypothesis that researchers aim to support with their data. In contrast to the null hypothesis, the alternative hypothesis predicts a specific direction or effect. For example, a researcher might hypothesize that higher levels of education lead to greater political engagement. In this case, the alternative hypothesis is proposing a positive correlation between the two variables.

The alternative hypothesis is the one that guides the research design, as it directs the researcher toward gathering evidence that will either support or refute the predicted relationship. The research process is structured around testing this hypothesis and determining whether the evidence is strong enough to reject the null hypothesis.

The process of formulating a hypothesis is both an art and a science. It requires a deep understanding of the social phenomena under investigation, as well as a clear sense of what is possible to observe and measure. Hypothesis formulation is closely linked to the theoretical framework that guides the research. Sociologists draw on existing theories to generate hypotheses, ensuring that their predictions are grounded in established knowledge.

To formulate a good hypothesis, a researcher must identify the key variables and determine how they are expected to relate to one another. Variables are the factors or characteristics that are being measured in a study. In sociology, these variables often include social attributes such as class, race, gender, age, education, and income, as well as behavioral variables like voting, criminal activity, or social participation.

For example, a sociologist studying the effects of social media on self-esteem might propose the following hypothesis: “Increased time spent on social media leads to lower levels of self-esteem among adolescents.” Here, the independent variable is the time spent on social media, and the dependent variable is the level of self-esteem. The hypothesis predicts a negative relationship between the two variables: as time spent on social media increases, self-esteem decreases.

A strong hypothesis has several key characteristics. It should be clear and specific, meaning that it unambiguously states the relationship between the variables. It should also be testable, meaning that it can be supported or refuted through empirical investigation. Finally, it should be grounded in theory, meaning that it is based on existing knowledge about the social phenomenon in question.

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