ERIC Number: ED045701
Record Type: RIE
Publication Date: 1971-Feb
Reference Count: 0
Two New Formulas for F in Analysis of Covariance for Two Groups and One Covariable.
Knapp, Thomas R.; Schafer, William D.
Two theorems concerning F in analysis of covariance with two groups (experimental and control) and one covariable (pretest score) are presented. The first shows explicitly that F is a direct function of the ratio of the variance about the regression line for the total sample to the variance about the within-group regression line. The second demonstrates the relationship between F and the corresponding F, which would result from analysis of variance using the appropriate pretest-posttest gain scores in the same situation. (Author)
Publication Type: N/A
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the annual meeting of the American Educational Research Association, New York, February 1971