require that the variances be equal for the dependent variable scores of the populations in question. A) parametric tests B) nonparametric C) both of the descriptive alternatives are correct D) neither of the descriptive alternatives are correct.

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Parametric tests assume that the data follows a certain distribution, typically a normal distribution, and one of the assumptions for many parametric tests (like ANOVA, t-tests) is the equality of variances (homogeneity of variances) among groups. Nonparametric tests do not require the assumption of equal variances.

Require That the Variances Be Equal for the Dependent