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50 Years of ERIC
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Peer reviewed Peer reviewed
ERIC Number: EJ569552
Record Type: CIJE
Publication Date: 1998
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0013-1644
Weighting by Inverse Variance or by Sample Size in Meta-Analysis: A Simulation Study.
Sanchez-Meca, Julio; Marin-Martinez, Fulgencio
Educational and Psychological Measurement, v58 n2 p211-20 Apr 1998
The bias and relative efficiency of two alternative estimators of optimal weights in meta-analysis were assessed through Monte Carlo simulation, defining the standardized mean differences as the effect-size index. The estimator proposed by L. Hedges and I. Olkin (1985) was more efficient than that of J. Hunter and F. Schmidt (1990). (SLD)
Descriptors: Effect Size, Estimation (Mathematics), Meta Analysis, Monte Carlo Methods, Sample Size, Simulation, Statistical Bias
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Variance (Statistical); Weighting (Statistical)