Easy
Effect Sizes
SPSS
Free
In a multiple linear regression predicting GPA from hours studied, SPSS reports R Square = .25. What is the best interpretation of this effect size?
A
25% of the variability in GPA is explained by the predictors in the model.
B
Increasing study hours by 1 hour increases GPA by 0.25 points.
C
The model is correct 25% of the time.
D
There is a 25% chance that the regression assumptions are satisfied.