Why would one conduct a MANOVA rather than multiple ANOVAs?
A) To reduce the number of subjects needed
B) To decrease the probability of a Type I error
C) To test for interactions
D) To test multiple independent variables

Question

Quizplus · Accepted Answer

MANOVA (Multivariate Analysis of Variance) is used instead of multiple ANOVAs to decrease the probability of a Type I error (incorrectly rejecting a true null hypothesis) that increases with the number of ANOVAs performed on the same data set.

Why Would One Conduct a MANOVA Rather Than Multiple ANOVAs