Nonparametric statistical tests are used when.
A)the population distribution is normal
B)the variances of scores are equal in the populations sampled
C)measurements represent either nominal or ordinal scales
D)the dependent variable achieves interval measurement

Question

Quizplus · Accepted Answer

Nonparametric statistical tests are used when the measurements represent either nominal or ordinal scales, meaning the data is not normally distributed or does not have equal variances. Parametric statistical tests, on the other hand, require normally distributed data and equal variances. Therefore, the best choice for when to use nonparametric tests is when the data does not meet the assumptions of parametric tests.

Nonparametric Statistical Tests Are Used When