In a short essay, discuss analysis of variance and list at least three questions that relate to the examination of the differences in the mean values of more than two groups

What will be an ideal response?

Analysis of variance is a statistical technique for examining the differences among means for two or more populations. The null hypothesis, typically, is that all means are equal. Marketing researchers are often interested in examining the differences in the mean values of more than two groups. The following are examples of questions associated with the examination of these differences.
a. Do the various segments differ in terms of their volume of product consumption?
b. Do the brand evaluations of groups exposed to different commercials vary?
c. Do retailers, wholesalers, and agents differ in their attitudes toward the firm's distribution policies?
d. Do the users, nonusers, and former users of a brand differ in their attitude toward the brand?