Difference Between Hypothesis and Theory (With Table)

Hypothesis vs Theory

In the scientific world, both the terms ‘hypothesis’ as well as a ‘theory’ holds ample importance. They are both a step in the process of developing law.

But outside science, both the terms theory and hypothesis have come to mean the same thing and are often used interchangeably.

Yet, there is a crucial difference between both the terms.

A hypothesis is an assumption made by the researcher that can be later proved by checking the causal and correlation relations between two or more phenomena.

The theory, on the other hand, is a proven explanation of a phenomenon.

The hypothesis is made at the beginning of the research, whereas a theory is developed at the end of the study.

A hypothesis can be proved to be a theory with tests.

All theories were mere hypotheses in the beginning, but not all hypotheses can be proved to be a theory.

Although, no theory can be tested without forming a prior hypothesis and no hypothesis can be valid without verifying it as a theory.


Comparison Table Between Hypothesis and Theory (in Tabular Form)

Parameter of comparisonHypothesisTheory
DefinitionA hypothesis is a guess or a statement made before testing and research.A theory is an explanation of phenomena derived by reliable data and evidence.
Role in the theoryAt the beginning of the research.Derived in the end after all the testing is carried out.
Testing methodsObservation and inspiration.Data is collected by various research methods like surveys, testing, etc.
ValidityNot very valid.Absolutely valid.
DataLittle to no data.Based on varied, reliable data.
PurposeTo find out the answer to the question 'why' as well as answers the problems of past events.To test the validity of the present data.
TestingCan be tested.Cannot be tested until observed in real life.


What is Hypothesis?

A hypothesis is a guess or a statement made before the research. A hypothesis is tested to be proved or disproved as a theory.

The hypothesis is thought of through observation and inspiration.

Hypothesis, unlike theory, can be considered at anywhere and at any time. It doesn’t need any testing to form a hypothesis.

The purpose of the hypothesis is to test the causal and correlation relationships between two or more phenomena and developing it into a theory.

Difference Between Positive Feedback and Negative Feedback (With Table)

A hypothesis is neither valid nor reliable. This is because it isn’t a proven fact, rather a mere observation that can be subjected to biases and limitations of an observer.

No data is required to develop a hypothesis.

The primary purpose of a hypothesis is to answer ‘why did something happen?’ the hypothesis can answer questions about events that have originated in the past or regarding the beginning of the universe.

The hypothesis can be tested and proved or disproved. Later, it can be developed as a theory.

Properties of Hypothesis
Properties of Hypothesis

What is Theory?

A theory is a proven hypothesis. The theory is a phenomenon that has been established by checking the causal and correlation relation between two or multiple phenomenons.

Various research methodologies test the theory. It explains a phenomenon and its causes and effects.

The theory is made by collecting a vast number of data from varied sources and tested individually and together to bring forth as many facts as possible.

The theory is always derived in the end after all the tests are done, and the research comes to one final conclusion.

The validity and reliability of a theory is solid, as it is backed by evidence of the proof that has been acquired through extensive research.

A theory is developed through the facts present in the present situation.

It doesn’t answer the question of past events rather merely states the facts of the current scenario and data.

It is developed but cannot be tested until the phenomenon occurs in the present time.

All theories were hypothesis at the beginning of the research.

Theory and Practice
Theory and Practice

Main Differences Between Hypothesis and Theory

  1. The hypothesis is a guess made by an observer, whereas a theory is a tested fact developed by the researcher.
  2. A hypothesis can predict the causal and correlation relationship between two or more phenomena, and the theory is an explanation of the phenomenon.
  3. A hypothesis is developed at the beginning of the research, but on the other hand, the theory is developed at the end.
  4. A hypothesis needs no data, and neither does it use any data, but a theory is developed through testing varied data to conclude.
  5. A hypothesis can be developed by mere observation or can be inspired anywhere at any time, but a theory is tested by a researcher with proper steps and testing, including analyzing the data.
  6. The validity and reliability of a hypothesis aren’t very accurate, whereas a theory is a solid statement that has ample validation and reliability.
  7. A theory tests the present facts, whereas a hypothesis answers the question ‘why’ and can be used to answer questions of past events.
  8. A hypothesis can be tested, whereas a theory cannot be tested unless the phenomenon occurs in real life.
Difference Between Fiction and Nonfiction (With Table)


Frequently Asked Questions (FAQ) About Hypothesis and Theory

  1. How are models related to theories and hypotheses?

    Basically, a theory is a broad generalization that explains a number of facts and figures and information. Once a hypothesis is proposed and then found out to be correct, then only the model is proposed.

    And then, if the model is able to explain major portions of the phenomenon. Then it becomes part of the theory.

  2. What makes a theory scientific?

    A scientific theory is a well-established and proven explanation of some fact and figure which is present in the natural world.

    It is usually based on heavy facts and figures which have been in use and have been confirmed from time to time by various scientists and users of the same.

  3. What is a theory in history?

    A Theory is a set of facts and figures that have been in use from the past many times. The theory is used to explain any phenomenon or any other scenario.

    A theory in history was regarded as that principle which has been time and again proven to be true by any scientist or philosopher.

  4. Is gravity a theory or law?

    It should be kept in the mind that when we are talking about gravity scientifically, then the law of gravity comes into the picture which talks about the attraction between the two objects.

    While on the other hand, we can also have discussions about the theory of the gravity which discusses the fact that why the objects attract each other.

  5. Can the hypothesis become a theory?

    It is a well-proven fact that hypothesis is termed to those ideas or principles that have not been proven yet or are still in the pipeline to be proven.

    If substantial evidence is accumulated which can easily support the hypothesis, then it becomes a theory.

  6. What is the function of control in an experiment?

    Control is very important in an experiment. If the parameters which are being used in an experiment are not in any control limits, then the experiment can go haywire and the desired results or the tests cannot be performed.

    The control helps in defining the upper and the lower limit of the experiment range.

  7. How do you explain a theory?

    A theory is a scientific explanation of various facts and figures which are related to some principle or aspect of the natural world and are based on the facts or the figures which have been time and again confirmed by performing various experiments and observations.

Difference Between Talmud and Torah (With Table)



In our colloquial language, we are used to saying and similarly using theory and hypothesis. The difference of the term, though, can be explained in a scientific field.

All hypotheses can be either disproved or proved as a theory, but all theories were hypothesis.

We can never get a theory if we never develop the hypothesis. Through testing of hypothesis, we can achieve a set of facts. Both processes are crucial in the development of a scientific fact.

The theory, as well as the hypothesis, has its role and purpose, but one cannot occur without the other.

A hypothesis is needed to conclude a theory, and a theory is needed to check the validity of a hypothesis.

I hope now all your doubts regarding hypothesis and theory are clear.


Word Cloud for Difference Between Hypothesis and Theory

The following is a collection of the most used terms in this article on Hypothesis and Theory. This should help in recalling related terms as used in this article at a later stage for you.

Difference Between Hypothesis and Theory
Word Cloud for Hypothesis and Theory



  1. http://www.onlinejacc.org/content/20/1/248.abstract
  2. https://psycnet.apa.org/record/1988-18821-001
  3. https://www.jstor.org/stable/1228142