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Educational and Psychological…2
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Messick, David M.1
Sands, William A.1
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Some Cheap Tricks for Making Inferences About Distribution Shapes from Variances.
Peer reviewed Peer reviewed
Messick, David M. – Educational and Psychological Measurement, 1982
Formulae and graphs are presented allowing computation of the variances of three prototypical distributions over a finite number of categories. The uses of the variances of the maximum variance distribution, the uniform distribution and a unimodal triangular distribution to make inferences about distribution shapes are shown in several examples.…
Descriptors: Analysis of Variance, Hypothesis Testing, Responses, Statistical Analysis
Two Computer Programs for the Statistical Evaluation of a Weighted Linear Composite.
Peer reviewed Peer reviewed
Sands, William A. – Educational and Psychological Measurement, 1978
Two computer programs (one batch, one interactive) are designed to provide statistics for a weighted linear combination of several component variables. Both programs provide mean, variance, standard deviation, and a validity coefficient. (Author/JKS)
Descriptors: Computer Programs, Data Processing, Multiple Regression Analysis, Online Systems