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Dunnett-Like Comparisons among Proportions.
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Williams, Richard H. – Educational and Psychological Measurement, 1992
A QuickBASIC program is described that can be used to conduct Dunnett-like comparisons on a set of independent proportions. The statistical method used, based on Levy's statistical method (1975), is an extension of the well-known Dunnett test for multiple comparisons on means. (Author/SLD)
Descriptors: Comparative Analysis, Computer Software, Computer Software Reviews, Control Groups
Effects of a Generative Instructional Design Strategy on Learning Mathematics and on Attitudes towards Achievement. What Works Clearinghouse Detailed Study Report
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PDF on ERIC Download full text
What Works Clearinghouse, 2004
There was no statistically significant difference in student performance between students receiving the Expert Mathematician curriculum and those in the control groups. Baker reported negligible differences between the Expert Mathematician intervention and control groups. The outcome measure is sufficiently reliable, based on the author's report…
Descriptors: Gender Differences, Instructional Design, Control Groups, Instructional Effectiveness