A procedure used to compare more than two groups of scores, each of which is from an entirely separate group of people, is called a(n):
A)analysis of variance
B)analysis of mean scores
C)t test for independent means
D)Z test for three groups

Question

Quizplus · Accepted Answer

Analysis of variance (ANOVA) is the appropriate statistical procedure used to compare more than two groups of scores, each of which is from an entirely separate group of people. ANOVA assesses the differences between the means of the groups, taking into account the variability within each group and the sample sizes. The other options listed, such as t tests and Z tests, are appropriate for comparing only two groups and not suitable for comparing more than two groups simultaneously.

A Procedure Used to Compare More Than Two Groups of Scores