Which of the following are assumptions underlying the use of parametric tests (based on the normal distribution)?
A) The data should be normally distributed.
B) The samples being tested should have approximately equal variances.
C) The data should be at least interval level.
D) All of the above.

Question

Quizplus · Accepted Answer

All of the assumptions listed above are necessary for the valid use of parametric tests based on the normal distribution. If any of these assumptions are violated, alternative nonparametric tests may be more appropriate.

Which of the Following Are Assumptions Underlying the Use of Parametric