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ERIC Number: EJ163241
Record Type: CIJE
Publication Date: 1977
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Fallibility of Measurement and the Power of a Statistical Test
Subkoviak, Michael J.; Levin, Joel R.
Journal of Educational Measurement, 14, 1, 47-52, Spr 77
Measurement error in dependent variables reduces the power of statistical tests to detect mean differences of specified magnitude. Procedures for determining power and sample size that consider the reliability of the dependent variable are discussed and illustrated. Methods for estimating reliability coefficients used in these procedures are provided. (Author/JKS)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A