Implementing the Welch-James Procedure with Factorial Designs.

Algina, James; Olejnik, Stephen F.

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ERIC Number: EJ297547

Record Type: Journal

Publication Date: 1984

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Implementing the Welch-James Procedure with Factorial Designs.

Algina, James; Olejnik, Stephen F.

Educational and Psychological Measurement, v44 n1 p39-48 Spr 1984

The Welch-James procedure may be used to test hypothesis on means, when independent samples from populations with heterogenous variances are available. Summation formulas for the Welch-James procedure are presented for the 2x2 design. Matrix formulas that permit routine application of the procedure to crossed factorial designs are presented. (Author/DWH)

Descriptors: Analysis of Variance, Hypothesis Testing, Mathematical Formulas, Matrices, Research Design, Statistical Analysis, Statistical Significance

Publication Type: Reports - Research; Journal Articles

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Language: English

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