ERIC Number: ED220517
Record Type: RIE
Publication Date: 1982-Mar
Reference Count: 0
Estimates of Multiple Correlation Coefficient Shrinkage.
Cummings, Corenna C.
The accuracy and variability of 4 cross-validation procedures and 18 formulas were compared concerning their ability to estimate the population multiple correlation and the validity of the sample regression equation in the population. The investigation included two types of regression, multiple and stepwise; three sample sizes, N = 30, 60, 120; and, two sets of predictors, n = 4, 8. The results indicate that most of the formulas and cross-validation procedures advocated in the literature were inaccurate and extremely variable. However, dependent upon the type of regression and the population value estimated, conservatively accurate estimators with low variability were identified. (Author/CM)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Identifiers: Criterion Variables; Cross Validation
Note: Paper presented at the Annual Meeting of the American Educational Research Association (66th, New York, NY, March 19-23, 1982).