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Download full textBoston, Carol – 2002
This Digest provides a review and applications of the concepts of normal distribution, standard deviation, effect size, and translation of effect size into percentile gain, the foundations for the understanding of meta analytic results. Meta analysis is a statistical technique that enables the results of a number of studies to be combined to…
Descriptors: Comparative Analysis, Effect Size, Meta Analysis, Statistical Distributions
Bangert-Drowns, Robert L.; Rudner, Lawrence M. – 1991
Meta-analysis is a collection of systematic techniques for resolving apparent contradictions in research findings. Meta-analysts translate results from different studies to a common metric and statistically explore the relations between study characteristics and findings. Since G. Glass first used the term "meta-analysis" in 1976, it has…
Descriptors: Comparative Analysis, Data Collection, Definitions, Educational Research
