Large-Sample Covariance Analysis When the Control Variable Is Fallible ANCOVA
- Author(s):
- Lord, Frederic M.
- Publication Year:
- 1958
- Report Number:
- RB-58-12
- Source:
- ETS Research Bulletin
- Document Type:
- Report
- Page Count:
- 24
- Subject/Key Words:
- Analysis of Covariance (ANCOVA), Control Groups, Error of Measurement, Research Design, Sample Size, Statistical Bias
Abstract
When the control variable contains errors of measurement, the usual analysis of covariance fails to adjust adequately for initial differences between groups. A large-sample statistical procedure is presented for making the desired significance test after appropriate adjustment for the fallibility of the control variable.
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- http://dx.doi.org/10.1002/j.2333-8504.1958.tb00273.x