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Peer reviewedWelch, Wayne W. – Journal of Research in Science Teaching, 1974
Examines, in some detail, the process of evaluation and describes methods that have been used in evaluation applied to precollege education. (PEB)
Descriptors: Educational Research, Evaluation, Evaluation Methods, Measurement
Peer reviewedWelch, Wayne W.; Huffman, Douglas; Lawrenz, Frances – Journal of Research in Science Teaching, 1998
Argues that science educators often face the problem of abnormal distributions when conducting large-scale assessments or evaluating national curriculum projects that require complex sampling plans. Examines the precision of science test scores. (DDR)
Descriptors: Data Analysis, Data Collection, Elementary Secondary Education, Evaluation Methods
