A Power Investigation of the Tukey Multiple Comparison Statistic.

Keselman, H. J.

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Peer reviewed

ERIC Number: EJ137074

Record Type: Journal

Publication Date: 1976

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A Power Investigation of the Tukey Multiple Comparison Statistic

Keselman, H. J.

Educational and Psychological Measurement, 36, 1, 97-104, Spr 76

Investigates the Tukey statistic for the empirical probability of a Type II error under numerous parametric specifications defined by Cohen (1969) as being representative of behavioral research data. For unequal numbers of observations per treatment group and for unequal population variancies, the Tukey test was simulated when sampling from a normal and a skewed population. (RC)

Descriptors: Analysis of Variance, Hypothesis Testing, Power (Statistics), Probability, Statistical Significance

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