A research hypothesis is an “educated guess” about relationships/differences in the possible result of scientific research. It should be a precise and testable statement. A good hypothesis converts the research question into a specific statement about the relationship between two or more research variables to predict an expected outcome. It is important to know about the research hypothesis and its type for every researcher.
Example hypothesis from Question to Statements
Question: Are health and mental stress-related?
Statement: I predict that health and mental stress are related
Question: How do the teaching practices in area X and area Y differ?
Statement: It is hypothesized that the teaching practices in X is different from that of Y
What are all the types of Research Hypothesis?
Defining the research hypotheses is one of the crucial steps in framing a scientific quantitative research study. Further, it can be classified into Directional, Non-Directional Hypotheses.
Non-Directional Hypothesis
The non-directional hypothesis is a two-tailed hypothesis where the direction of prediction is not specified, In this, the independent variable will have an effect on the dependent variable.
Directional Hypothesis
The directional hypothesis is a one-tailed hypothesis that uses the characteristics of the independent variable’s effect on the dependent variable to predict the exact direction of the effect.
Examples of Directional, Non-Directional Hypotheses
Non – Directional Hypothesis: I predict that health and mental stress are related
Directional Hypothesis: I predict that health and mental stress are inversely related
Non – Directional Hypothesis: It is hypothesized that test performance and anxiety will be significantly related
Directional Hypothesis: It is hypothesized that as anxiety increases, test performance will decrease
Alternative Hypothesis (HA)
The alternative hypothesis states the effect of a relationship between one variable to another variable. In this, the result of the study is not due to the chance of occurrence in the study.
Also, we accept the alternative hypothesis if the null hypothesis is denied. We do not accept the alternative hypothesis if the null hypothesis is not rejected.
Null Hypothesis (HO)
The null hypothesis states that the two variables under investigation have no relationship which means one variable does not affect the other variable. It claims that the findings are purely coincidental and have no presence in the validity of the hypothesis being investigated.
Question: Do animals care about the colour of their food?
Null Hypothesis: Animals never express food preference based on color.
Negation to Form Null and Alternative Hypothesis:
Null hypothesis: “x is equal to y.” Alternative hypothesis “x is not equal to y.”
Alternative hypothesis “x is less than y, ”Null hypothesis: “x is at least y.”
Null hypothesis: “x is at most y.” Alternative hypothesis “x is greater than y.”
Taylor, Courtney. ThoughtCo.
Also Read:
[…] What is Research Hypothesis? […]
A research Hypothesis is a proposed explaination for a phenomeon. For the Hypothesis to a scientific method requires that one can test it.
[…] What is Research Hypothesis? […]
Research is a scientific approach of answering a research question, solving a research problem, or generating new knowledge through a systematic and orderly collection, organization, and analysis of data with the ultimate goal of making the findings of research useful in decision-making.
t is based on the work of others.
It can be replicated and doable .
It is generalisable to other settings.
It is based on some logical rationale and tied to theory. …
It generates new questions or is cyclical in nature.
It is incremental.
It addresses directly or indirectly some real problem in the world.