Caleb S.
Caleb S.

How to Write a Hypothesis - Complete Guide, Types & Examples

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Published on: Jun 9, 2020

Last updated on: Apr 15, 2023

How to Write a Hypothesis

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A hypothesis is a proposed explanation for what might happen in the future, based on evidence and facts. It is one of the most important parts of any scientific experiment. So, it must be based on evidence and proven through facts, examples, or other logical reasoning.

It can be a prediction that aims to explain an experiment's outcome. A good hypothesis will help you conduct future research and guide the outcome of that specific study.

We know hypotheses raise countless questions. Such as:

How to write a hypothesis and prediction?

How to write a scientific hypothesis?

How to write a hypothesis in psychology?

How to write a hypothesis in statistics?

How to write a hypothesis for a science fair?

How to write a hypothesis for a lab report?

How to write a hypothesis in quantitative research?

How to write a hypothesis for a research paper?

How to write a hypothesis for history?

Are you wondering how to write a hypothesis statement for these scenarios listed above?

Refer to this blog; we’ll go through some simple steps to explain how to write a hypothesis. Since building a strong, well-written hypothesis is essential for future research.

We will also provide plenty of examples to make it easier for you to write the different hypotheses. Let’s start!

What is Hypothesis?

A hypothesis is a prediction that's more like an educated guess. It starts with an intriguing question and then explores it through research to find the best answer possible.

The goal is to develop a testable hypothesis by answering the question -What happens next?' You need a strong hypothesis for every type of research project so your data can be analyzed correctly!

Also, your study should make sense if you are trying to explain what happened in the past or predict future outcomes.

For example, to explore the effects of a particular drug on certain disease symptoms, one must clarify what they hope this medication might accomplish.

Psychology researchers conduct many studies to test the hypothesis of how the environment influences behavior.

The goal of a hypothesis is not always accurate. While it predicts what researchers expect, the study aims to determine whether or not your guess came out right!

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What Are 6 Parts of Hypothesis?

Below are six steps for hypothesis testing:

  1. Hypotheses
  2. Assumptions
  3. Test Statistic
  4. Rejection Region
  5. Calculations
  6. Conclusions

Functions of Hypothesis

A good way to make your hypothesis stand out is by understanding the basic functions it performs. To do this, you must first understand those functions and how they work together.

  • A hypothesis is a fundamental contribution to any research, observation, and experiment.
  • This allows you to get started with an investigation.
  • It helps verify what was observed and provides direction for your inquiries.

What Are 5 Characteristics of a Good Hypothesis?

Here are the five main characteristics that make up a good hypothesis:

  1. Power of prediction
  2. Specific
  3. Clarity
  4. Testability
  5. Relevant to problem

Various Types of Hypotheses

There are various types of hypotheses, and it's important to understand them before you start writing a hypothesis.

Below is a detailed description of each type of hypothesis.

Simple Hypothesis

Wondering, what is a simple hypothesis?

A simple hypothesis is a general prediction about the relationship between dependent and independent variables. It can be used in observation to test your understanding without wasting time. It verifies facts you already know or makes assumptions based on limited evidence.

What is an example of a hypothesis?

Here are some examples that might help you understand it better:

  • Smoking cigarettes daily leads to lung cancer.
  • Global Warming causes icebergs to melt.
  • Employees who bring their own lunch spend less money throughout the day.

Complex Hypothesis

A complex hypothesis predicts how two or more dependent and independent variables will interact.

Below are some complex hypothesis examples to understand how this concept works.

  • The higher the illiteracy in society, the higher the crime rate and poverty will be.
  • People who eat fewer vegetables and fattier foods are more likely to develop heart disease.
  • If the boss gives employees a holiday bonus, they will work harder during the year.

Empirical Hypothesis

An empirical hypothesis is a working theory that can be tested through observation and experimentation.

What is a good hypothesis example?

Here are some good examples of empirical hypotheses:

  • Animals learn faster if the food is given immediately after the response of a command.
  • Employees will complete their work faster if the temperature in an office is 70 degrees.
  • Women who take vitamin E grow their hair faster than those who take vitamin K.

Null Hypothesis

If your research methods entail statistical hypothesis testing, you have to formulate a null hypothesis.

The scientific community often uses the null hypothesis to guess what will happen with insufficient data. It is denoted as H0.

Are you looking for a way to learn how to write a null hypothesis?

Learn how to prove or disprove something by looking at the null hypothesis examples below.

  • My work habits do not change whether I get 6 hours or 10 hours of sleep.
  • Age does not affect mathematical ability.
  • There is no improvement in my well-being, no matter how healthy I eat or get plenty of sleep.

Alternative Hypothesis

An alternative hypothesis is a false theory that explains the results of an experiment. It is denoted as H1.

You can learn more about how to write a hypothesis example is written:

  • My health gets better when I drink green tea daily.
  • The plant's growth improved when it only received vitamin-rich water rather than distilled water.
  • My work habits improve when I sleep on time and wake up early in the morning.

Now you know everything there is to know about how to write a null and alternative hypothesis should be written.

Logical Hypothesis

A logical hypothesis explains how you think something works that go beyond the evidence. It's like testing your theories against reality, putting them on trial, and seeing if they hold up the test.

Here are some on how to write a hypothesis example might look like.

  • Cacti grow faster than tulips on Mars.
  • The atmospheric pressure on Mars is less than one-hundredth of what we breathe on Earth.
  • Anaerobic respiration is used by creatures found at the ocean's depths rather than aerobic respiration.

Statistical Hypothesis

A statistical hypothesis is an examination of the population that uses data to draw conclusions about how things work. This type of analysis uses data that has been collected for a specific area to come up with conclusions about its state at that moment.

Below are some interesting and creative ways to conduct your research using statistical information.

  • About 16% of the American population is 65 years old or over.
  • 45% of the poor in the U.S. are illiterate.
  • 50% of Savannah's population lives beyond the age of 70.

How to Write a Hypothesis?

Here are the steps you must take to write a strong hypothesis.

1. Ask a Question

A hypothesis begins with a research question that must be answered. The study’s goal should fall within its scope, so it's important to have clear and focused questions beforehand!

A research question is an important critical element of any good argument. It needs to be testable, which means a hypothesis can answer the question with scientific evidence and logic.

2. Conduct Some Preliminary Research

Research is the backbone of any good response. Before presenting any data or findings, researchers need to plan what they say about the research paper topics. It's also necessary to review previous studies to develop better hypotheses.

So, it's important to define the variables you will be focusing on and their relationship. This helps identify which one is most essential for your research project and how they interact with each other.

You can use a framework to identify which variables you will be focusing on.

Now that you have your variables identified, think about how they are related. For example, if one of them changes somehow, what happens to the others?

3. Construct Your Hypothesis

Many variables affect the outcome of your experiment. Make sure you include them all for an accurate interpretation to take place!

A study is more than just data; it’s an experiment. The 'independent variable' in the equation represents what you're testing for your experiment - whether or not that factor affects how participants respond when given certain tasks to complete.

How long is a hypothesis?

The best way to make your hypothesis statement clear and direct is by aiming for a length of 20 words or less.

4. Improve Your Hypothesis

When developing a research paper, make certain that your hypothesis is testable and concise. You can refine it by creating additional tests for different outcomes to be examined in the future.

What are the basic elements of a hypothesis?

The terms you use must be clearly defined and include the following elements.

      • The necessary variables
      • The group being investigated
      • The predicted result of the analysis

5. Make Three Versions of Your Hypothesis

To identify the variables, make a simple prediction in the form of if...then.

How to write a hypothesis then?

The independent variable should be stated at the beginning of the sentence, and the dependent variable should be stated at the end of the sentence.

A hypothesis is commonly phrased in academic research to define relationships or demonstrate effects. The relationship between the two variables must be stated here.

When making a comparison, the difference of expectations should be stated.

6. Create a Null Hypothesis

Using statistical hypothesis testing, it's important to develop a null hypothesis. A 'HO' is given by default and indicates no relationship between variables being studied in research.

A hypothesis is a proposal that must be tested to see if it can explain or predict facts. You will use it to design an experiment and analyze its results accordingly.

This is the reason why a hypothesis must be stated clearly. After you have finished writing your theory, test and analyze data to reach a conclusion that hopefully answers all questions about the topic at hand!

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Tips for Writing a Hypothesis

The process of knowing how to write a good hypothesis is not an easy task. To make sure you get the right results, here are some important tips from experts:

  • Don't just pick a random topic.
  • Keep your hypothesis brief, clear, and concise.
  • Conducting research is important to ensure the quality and thoroughness of your work, so make sure you do it!
  • For a more engaging experience, try to find something interesting and creative.
  • Understanding your audience is key to identifying the relationship between various experiments.
  • Define your independent and dependent variables clearly.

Are you still struggling to come up with a perfect thesis statement? We at can provide all of your needs.

You can always rely on us for every type of essay writing help. We have the knowledge and expertise necessary to meet your every need as a student, from research to case studies!

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Caleb S.


Caleb S., Literature, Marketing

Caleb S. has been providing writing services for over five years and has a Masters degree from Oxford University. He is an expert in his craft and takes great pride in helping students achieve their academic goals. Caleb is a dedicated professional who always puts his clients first.

Caleb S. has been providing writing services for over five years and has a Masters degree from Oxford University. He is an expert in his craft and takes great pride in helping students achieve their academic goals. Caleb is a dedicated professional who always puts his clients first.

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