Asked by: Nouraddin Natschke
business 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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Directional hypothesis are those where one can predict the direction (effect of one variable on the other as 'Positive' or 'Negative') for e.g: Girls perform better than boys ( 'better than' shows the direction predicted ) Non Directional hypothesis are those where one does not predict the kind of effect but can state

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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.

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What do you mean by null hypothesis?

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Can a hypothesis be negative?

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What is an experimental hypothesis example?

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What is a hypothesis and how is it tested?

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Why is a hypothesis important in research?

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