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Nonparametric test for psychological research

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Why do we use nonparametric tests? Describe a psychological research situation or scenario that would use a non-parametric test. Why would the non-parametric test be used?

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The solution examines nonparametric tests for psychological research.

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Non-parametric tests

Non-parametric models differ from parametric models in that the model structure is not specified a priori but is instead determined from data. The term nonparametric is not meant to imply that such models completely lack parameters but that the number and nature of the parameters are flexible and not fixed in advance. There are some researchers problem apply non-parametric tests when assumptions are violated. Nonparametric tests are employed to test for differences between samples or populations for nominal and ordinal level data As the name implies, non-parametric tests do not require parametric assumptions because interval data are converted to rank-ordered data.

For example:
Formulate a hypothesis statement regarding your research issue.

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