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Download full textBernstein, Lawrence; Burstein, Nancy – 1994
The inherent methodological problem in conducting research at multiple sites is how to best derive an overall estimate of program impact across multiple sites, best being the estimate that minimizes the mean square error, that is, the square of the difference between the observed and true values. An empirical example illustrates the use of the…
Descriptors: Bias, Comprehensive Programs, Data Analysis, Data Collection
