Expands the Capabilities of SPSS and Excel 

Program Dynamic

This program asks the user to input the squared multiple correlation, the sample size, the number of predictors and the desired confidence interval.  After pressing calculate, the program shows the lower and upper limits of the confidence interval and the results of an F test that tests the null hypothesis that the squared correlation is zero.  The example below shows how the dialog box looks after the data have been entered and the Calculate button is pressed.

The program is unique in that few statistical packages provide confidence intervals for a squared multiple correlation.  ZumaStat uses an estimation strategy based on fixed-effects regression models or models where the predictors are stochastic conditional on the actual sample of observed Xs.  These models are common in social science research.

How it Appears on Your Screen