Asked by: Nouraddin Natschkebusiness and finance publishing industry
What is the difference between a directional hypothesis and a nondirectional hypothesis?
Last Updated: 26th April, 2020
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Simply so, what is a nondirectional hypothesis?
A nondirectional hypothesis is a type of alternative hypothesis used in statistical significance testing. In contrast, a directional alternative hypothesis specifies the direction of the tested relationship, stating that one variable is predicted to be larger or smaller than null value, but not both.
Also, why use a non directional hypothesis? Nondirectional Hypothesis A two-tailed non-directional hypothesis predicts that the independent variable will have an effect on the dependent variable, but the direction of the effect is not specified. E.g., there will be a difference in how many numbers are correctly recalled by children and adults.
Also question is, what is a directional hypothesis?
A directional hypothesis is a prediction made by a researcher regarding a positive or negative change, relationship, or difference between two variables of a population.
Should the hypothesis for this research be directional or nondirectional?
Suggested Answer: No, it should be non-directional. Directional hypotheses are used when previous research suggests that the findings of a study will go in a particular direction; however, as the extract says 'a psychologist was not aware of any previous research', a directional hypothesis would not be appropriate.