The importance of a 15-point difference in means between two groups:
A) depends on the spread of scores in each group
B) depends on the shape of the frequency polygons
C) depends on the number of cases in each group
D) all of the above

Question

Quizplus · Accepted Answer

The importance of a 15-point difference in means between two groups is influenced by the spread of scores within each group (which affects the variability and standard deviation), the shape of the frequency polygons (which can indicate the distribution of scores and potential outliers), and the number of cases in each group (which affects the statistical power and the reliability of the mean difference). All these factors together determine the significance and practical importance of the difference in means.

The Importance of a 15-Point Difference in Means Between Two