Understanding Power and Rules of Thumb for Determining Sample Sizes

Understanding Power and Rules of Thumb for Determining Sample Sizes

This article addresses the definition of power and its relationship to Type I and Type II errors. We discuss the relationship of sample size and power. Finally, we offer statistical rules of thumb guiding the selection of sample sizes large enough for sufficient power to detecting differences, assoc...

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Veröffentlicht in:Tutorials in quantitative methods for psychology 2007-01, Vol.3 (2), p.43-50
Hauptverfasser: Wilson Van Voorhis, Carmen R., Morgan, Betsy L.
Format: Artikel
Sprache:eng
Schlagworte:
statistical power
statistics
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Beschreibung
Zusammenfassung:This article addresses the definition of power and its relationship to Type I and Type II errors. We discuss the relationship of sample size and power. Finally, we offer statistical rules of thumb guiding the selection of sample sizes large enough for sufficient power to detecting differences, associations, chi-square, and factor analyses.
ISSN:1913-4126
1913-4126
DOI:10.20982/tqmp.03.2.p043