The following data show the means for four treatment conditions as well as the overall means for the columns and the rows.For these data,what numbers are compared to assess the main effect of factor A?
A1 A2 M = 25 M = 65
B1
M = 20
M = 60
M = 40 B2
M = 30
M = 70
M = 50

Question

The following data show the means for four treatment conditions as well as the overall means for the columns and the rows.For these data,what numbers are compared to assess the main effect of factor A?
​ A1 A2 M = 25 M = 65
​ B1
M = 20
M = 60
M = 40 B2
M = 30
M = 70
M = 50

Quizplus · Accepted Answer

To assess the main effect of factor A, we compare the overall means for the conditions within factor A. In this case, the overall means for A1 and A2 are 25 and 65, respectively. Therefore, we compare these two numbers to assess the main effect of factor A.

The Following Data Show the Means for Four Treatment Conditions