The following data are from an experiment comparing three di

The following data are from an experiment comparing three different treatment conditions for each of 5 people (i.e. each person was exposed to condition A, B, and C during the study):                         

A

B

C

0

1

2

2

5

5

N = 15

1

2

6

5

4

9

X² = 354

2

8

8

T = 10

T = 20

T = 30

SS = 14

SS = 30

SS = 30

Using an = .05, determine whether there are significant mean differences among the three conditions.

Computer the effect size for the study.

Solution