If one wishes to compare groups ranks,then a _____ method should be used.
A)parametric
B)nonparametric
C)either a parametric or a nonparametric
D)it depends on the number of levels of the independent variable

Question

Quizplus · Accepted Answer

Nonparametric methods are appropriate for comparing group ranks as they do not make assumptions about the underlying population distribution of the data, and are robust to outliers. Parametric methods, on the other hand, assume normally distributed data and equal variances between groups, which may not be met in rank data. It does not depend on the number of levels of the independent variable.

If One Wishes to Compare Groups Ranks,then a _____ Method