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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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In 20150
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Descriptor
Computer Software1
Computers1
Correlation1
Educational Research1
Effect Size1
Field Studies1
Multivariate Analysis1
Research Design1
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Source
National Center for Special…1
Author
Hedges, Larry V.1
Rhoads, Christopher1
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Guides - General1
Reports - Evaluative1
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Statistical Power Analysis in Education Research. NCSER 2010-3006
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Hedges, Larry V.; Rhoads, Christopher – National Center for Special Education Research, 2010
This paper provides a guide to calculating statistical power for the complex multilevel designs that are used in most field studies in education research. For multilevel evaluation studies in the field of education, it is important to account for the impact of clustering on the standard errors of estimates of treatment effects. Using ideas from…
Descriptors: Research Design, Field Studies, Computers, Effect Size