The following data represent the means for each treatment co

The following data represent the means for each treatment condition in a two factor experiment. Note that one mean is not given. What value for the missing mean would results in no AXB interaction?

B1 B2

A1 20 10

A2 40 ?

A. 30

B. 40

C. 10

D. 20

Solution

We notice that 40 - 20 = 20

So, let the missing mean be \'x\'

x - 10 = 20

x = 20 + 10

x = 30

Option A