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St. Pierre, Robert G. – Evaluation Quarterly, 1978
Data from the national evaluation of Project Follow Through were analyzed using analysis of covariance with and without correcting the pretest for unreliability. Such corrections led to some changes in conclusions. There are many disagreements in the literature about the appropriateness of correction for unreliability. (Author/CTM)
Descriptors: Analysis of Covariance, Data Analysis, Error Patterns, Pretests Posttests