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Peer reviewedKnapp, Thomas R.; Tam, Hak P. – Mid-Western Educational Researcher, 1997
Examines potential problems in the use of inferential statistics for single population proportions, differences between two population proportions, and quotients of two population proportions. Discusses hypothesis testing versus interval estimation. Emphasizes the importance of selecting the appropriate formula for the standard error and…
Descriptors: Educational Research, Error of Measurement, Hypothesis Testing, Ratios (Mathematics)
Peer reviewedPerloff, Richard M.; And Others – New Directions for Program Evaluation, 1980
Causes of evaluator bias are: overemphasizing concrete, salient, and retrievable information; reporting only evidence which confirms hypothesis; focusing on stable personality factors, rather than on situation and environment; developing positive perceptions of a program as both an evaluator and a highly involved participant; statistical naivete;…
Descriptors: Bias, Cognitive Processes, Evaluative Thinking, Evaluators
