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50 Years of ERIC
50 Years of ERIC
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Peer reviewed Peer reviewed
ERIC Number: EJ460529
Record Type: CIJE
Publication Date: 1992
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0034-6543
Caution on the Use of Variance Ratios: A Comment.
Shaffer, Juliet Popper
Review of Educational Research, v62 n4 p429-32 Win 1992
Several metanalytic studies of group variability use variance ratios as measures of effect size. Problems with this approach are discussed, including limitations of using means and medians of ratios. Mean logarithms and the geometric mean are not adversely affected by the arbitrary choice of numerator. (SLD)
Descriptors: Effect Size, Evaluation Problems, Logarithms, Mathematical Models, Measurement Techniques, Ratios (Mathematics), Sex Differences
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Averaging (Mathematics); Mean (Statistics); Variability Measurement; Variance (Statistical); Variance Ratios