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Peer reviewedPowers, Stephen; Jones, Patricia – Educational and Psychological Measurement, 1986
This paper describes a computer program which tests all pairwise comparisons of adjusted means in analysis of covariance by using Tukey-Kramer Test. The program contains: means of covariate, adjusted means of the criterion measure, sample size, mean square error, and the desired percentile point on the Studentized range distribution. (JAZ)
Descriptors: Analysis of Covariance, Comparative Analysis, Computer Software, Microcomputers
Peer reviewedKarpman, Mitchell – Educational and Psychological Measurement, 1986
The Johnson-Neyman (JN) technique is a parametric alternative to analysis of covariance that permits nonparallel regression lines. This article presents computer programs for J-N using the transformational languages of SPSS-X and SAS. The programs are designed for two groups and one covariate. (Author/JAZ)
Descriptors: Analysis of Covariance, Comparative Analysis, Computer Software, Programing Languages
Peer reviewedVooijs, Marcel W.; Van der Kamp, Leo J. T. – Evaluation Review, 1991
A two-step procedure is developed for the analysis of pretest-posttest data. Nonlinear canonical correlation analysis is followed by covariance analysis of optimally scaled pretest and posttest measures. The procedure is available in the computer program CANALS. Advantages of the two-step procedure are discussed. (SLD)
Descriptors: Analysis of Covariance, Comparative Analysis, Computer Software, Correlation
Download full textWideman, Herbert H.; Owston, Ronald D. – 1991
This study examined cognitive processes and outcomes associated with student knowledge base development. Sixty-nine students from two grade 8 classes were randomly assigned to one of three groups: a knowledge base development (KBD) group, a problem-solving software group, and a control group. Those in the KBD group received relevant instruction…
Descriptors: Abstract Reasoning, Analysis of Covariance, Cognitive Processes, Comparative Analysis
