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Algorithms	2
Analysis of Variance	2
Power (Statistics)	2
Analysis of Covariance	1
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Educational Research	1
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Educational and Psychological…

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Frigon, Jean-Yves	1
Laurencelle, Louis	1
Rasmussen, Jeffrey Lee	1

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Algorithm for Shaffer's Multiple Comparison Tests.

Peer reviewed

Rasmussen, Jeffrey Lee – Educational and Psychological Measurement, 1993

J. P. Shaffer has presented two tests to improve the power of multiple comparison procedures. This article described an algorithm to carry out the tests. The logic of the algorithm and an application to a data set are given. (SLD)

Descriptors: Algorithms, Analysis of Variance, Comparative Analysis, Logic

Analysis of Covariance: A Proposed Algorithm.

Peer reviewed

Frigon, Jean-Yves; Laurencelle, Louis – Educational and Psychological Measurement, 1993

The statistical power of analysis of covariance (ANCOVA) and its advantages over simple analysis of variance are examined in some experimental situations, and an algorithm is proposed for its proper application. In nonrandomized experiments, an ANCOVA is generally not a good approach. (SLD)

Descriptors: Algorithms, Analysis of Covariance, Analysis of Variance, Educational Research