Estimating the Effect of Changes in Criterion Score Reliability on the Power of the F Test of Equality of Means-Reference-Cited by-同舟云学术

Estimating the Effect of Changes in Criterion Score Reliability on the Power of the F Test of Equality of Means

Published:2011-03-22 Issue:2 Volume:71 Page:420-430
ISSN:0013-1644
Container-title:Educational and Psychological Measurement
language:en
Short-container-title:Educational and Psychological Measurement

Author:

Feldt Leonard S.¹

Affiliation:

1. University of Iowa, Iowa City, IA, USA,

Abstract

This article presents a simple, computer-assisted method of determining the extent to which increases in reliability increase the power of the F test of equality of means. The method uses a derived formula that relates the changes in the reliability coefficient to changes in the noncentrality of the relevant F distribution. A readily available computer applet translates the noncentrality parameter into the power value of the F test.

Publisher

SAGE Publications

Subject

Applied Mathematics,Applied Psychology,Developmental and Educational Psychology,Education

Link

http://journals.sagepub.com/doi/pdf/10.1177/0013164410375572

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