**MULTIPLE REGRESSION**

**1. Test significance level, a**

Alpha is the probability of rejecting the null hypothesis of a zero
multiple correlation coefficient when it is true (the probability
of a Type I error).

Suggestion: Enter 0.05, a frequent standard

Acceptable entries: 0.001 to 0.20

**For this example: Stanovich
et al set a = .05. So type ".05"
in the first box.

**2. Number of variables, k**

Specify the number of variables to be included in the multiple regression
model.

Acceptable entries: ³
1

**For this example: There were
4 independent variables. So type "4" in the second box.

**3. Squared multiple correlation, R**^{2}

Enter the proportion of total variance that is explained by the included
covariates.

Acceptable entries: > 0.00 to 0.99

**For this example: Multiple R^{2}
= .494. So type ".494" in the third box.