Factorial Analysis of Covariance for 2x2 Independent Samples
This page will perform an analysis of covariance for four independent samples, cross-tabulated according to two independent variables, A and B, where
A1 and A2 represent two quantitative or categorical levels of the independent variable A;
B1 and B2 represent two quantitative or categorical levels of the independent variable B;
DV = the dependent variable of interest; and
CV = the concomitant variable whose effects one wishes to bring under statistical control.
Procedure: For each sample, enter the paired values of CV and DV in the cells of the designated columns, beginning in the top-most cell of each column. Within any particular column, pressing the "tab" key will take you down to the next cell in the column. After all data have been entered, click the "Calculate" button. ~~ If you wish to perform another analysis with a different set of data: click the "Reset" button if the value of n for the largest of your new samples is or smaller; click the "Reload" button if the value of n for the largest of the new samples is greater than .
Data Entry: CV = concomitant variable DV = dependent variableQ
B1
B2
CV
DV
CV
DV
A1
Dependent Variable: Values of n for Cells and MarginalsQ