One factor that is important in deciding whether to use a parametric or non-parametric test is the decision about what aspect of the distribution of the independent variable one wishes to focus on.

Question

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The choice between parametric and non-parametric tests depends on the distribution of the dependent variable, not the independent variable. Parametric tests assume a specific distribution (usually normal) for the dependent variable, while non-parametric tests do not.

One Factor That Is Important in Deciding Whether to Use