QUESTION

# Can someone walk me through the steps to find quot;the effect size for each of my factors and the interaction, and to explain the resultsquot;...

Can someone walk me through the steps to find "the effect size for each of my factors and the interaction, and to explain the results" within SPSS...it has to be SPSS.

Here is the work I did in SPSS so far: It is for a two-way ANOVA

Tests of Between-Subjects Effects

Dependent Variable: Acuity Results

Source                    Type III Sum of Squares    df           Mean Square           F.                Sig.

Corrected Model                 114.800a                            5                 22.960           34.440         .000

Intercept                           529.200                     1                529.200            793.800        .000

Diet                                   6.200                         2                  3.100                4.650         .020

Exercise                           90.133                        1                  90.133             135.200      .000

Diet * Exercise                 18.467                        2                 9.233               13.850         .000

Error                                16.000                       24                 .667

Total                                660.000                       30

Corrected Total                130.800                       29

a. R Squared = .878 (Adjusted R Squared = .852)

Below was the question I had to answer, regarding my SPSS work above.

A researcher is interested in studying the effect that the amount of fat in the diet and amount of exercise has on the mental acuity of middle-aged women. The researcher used three different treatment levels for the diet and two levels for the exercise. The results of the acuity test for the subjects in the different treatment levels are shown below.