Estimation of the Box Correction for Degrees of Freedom from Sample Data in Randomized Block and Split-Plot Designs.

Huynh, Huynh; Feldt, Leonard S.

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Peer reviewed

ERIC Number: EJ137066

Record Type: Journal

Publication Date: 1976

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Estimation of the Box Correction for Degrees of Freedom from Sample Data in Randomized Block and Split-Plot Designs

Huynh, Huynh; Feldt, Leonard S.

Journal of Educational Statistics, 1, 1, 69-82, Spr 76

When the variance assumptions of a repeated measures ANOVA are not met, the F distribution of the mean square ratio should be adjusted by the sample estimate of the Box correction factor. An alternative is proposed which is shown by Monte Carlo methods to be less biased for a moderately large factor. (RC)

Descriptors: Analysis of Variance, Computer Programs, Hypothesis Testing, Matrices, Monte Carlo Methods, Statistical Bias, Statistical Significance

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