Which of the following compares the differences observed between the groups to the differences one would normally expect on the basis of chance alone and then compute the probability that the results would have been obtained solely by chance?
A)Regression analysis
B)Analysis of variance (ANOVA)
C)Wechsler Adult Intelligence Scale (WAIS)
D)Group mean comparisons

Question

Quizplus · Accepted Answer

Analysis of variance (ANOVA) compares the observed differences between groups to the expected differences based on chance alone and calculates the probability that the results were obtained solely due to chance. This allows researchers to determine whether the differences between the groups are statistically significant or not. The other options (regression analysis, WAIS, and group mean comparisons) do not involve comparing observed differences to expected differences based on chance.

Which of the Following Compares the Differences Observed Between the Groups