The analysis of variance ANOVA is a procedure for testing th

The analysis of variance (ANOVA) is a procedure for testing the hypothesis that..

A. There is no variation between several samples.
B. Several populations all have the same mean.
C. Several populations all have the same standard deviation.
D. All of the above.

Solution

The null hypothesis for ANOVA is that there is the same mean for all the conditions. Hence,

B. Several populations all have the same mean. [ANSWER]