What Size Samples for Methods/Materials Experiments?.

Feldt, Leonard S.

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Peer reviewed

ERIC Number: EJ085400

Record Type: Journal

Publication Date: 1973

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What Size Samples for Methods/Materials Experiments?

Feldt, Leonard S.

Journal of Educational Measurement, 10, 3, 221-26, F 73

This paper provides a guide to the minimum size of treatment groups, inferred from the relationships between pupil norms and norms for class averages of standardized achievement tests. (Editor)

Descriptors: Class Average, Correlation, Educational Experiments, Group Norms, Measurement, Sampling, Standardized Tests, Statistical Analysis, Tables (Data)

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Identifiers - Assessments and Surveys: Iowa Tests of Basic Skills

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