TY - JOUR
T1 - Sample size calculations for precise interval estimation of the eta-squared effect size
AU - Shieh, Gwowen
N1 - Publisher Copyright:
Copyright © 2015 Taylor & Francis Group, LLC.
PY - 2015/4/3
Y1 - 2015/4/3
N2 - Analysis of variance is one of the most frequently used statistical analyses in the behavioral, educational, and social sciences, and special attention has been paid to the selection and use of an appropriate effect size measure of association in analysis of variance. This article presents the sample size procedures for precise interval estimation of eta-squared and partial eta-squared in fixed-effects analysis of variance designs. The desired precision of a confidence interval is assessed with respect to (a) the control of expected width and (b) the tolerance probability of interval width within a designated value. In addition, sample size calculations for standardized contrasts of treatment effects and corresponding partial strength of association effect sizes are also considered.
AB - Analysis of variance is one of the most frequently used statistical analyses in the behavioral, educational, and social sciences, and special attention has been paid to the selection and use of an appropriate effect size measure of association in analysis of variance. This article presents the sample size procedures for precise interval estimation of eta-squared and partial eta-squared in fixed-effects analysis of variance designs. The desired precision of a confidence interval is assessed with respect to (a) the control of expected width and (b) the tolerance probability of interval width within a designated value. In addition, sample size calculations for standardized contrasts of treatment effects and corresponding partial strength of association effect sizes are also considered.
KW - Confidence interval
KW - Expected width
KW - Standardized contrast
KW - Strength of association
KW - Tolerance probability
UR - http://www.scopus.com/inward/record.url?scp=84927691245&partnerID=8YFLogxK
U2 - 10.1080/00220973.2014.907227
DO - 10.1080/00220973.2014.907227
M3 - Article
AN - SCOPUS:84927691245
SN - 0022-0973
VL - 83
SP - 203
EP - 217
JO - Journal of Experimental Education
JF - Journal of Experimental Education
IS - 2
ER -