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The Effects of an Independent Learning System on Student Achievement and Attitudes. Volume II: Correlation Matrices of Student Variables and Item Statistics for Student Measures.

Stanton, George; And Others – 1976

This is one of three volumes presenting the procedures and results of a research effort investigating the effects upon student outcomes of training teachers to implement individual study and self-directed study in their classrooms. In this volume correlation matrices drawn from tests of student variables and achievement are presented. Item…

Descriptors: Academic Achievement, Correlation, Independent Study, Individualized Instruction

A Comparison of Simple Random Sampling Versus Stratification for Allocating Items to Subtests in Multiple Matrix Sampling.

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Scheetz, James P.; Forsyth, Robert A. – 1977

Empirical evidence is presented related to the effects of using a stratified sampling of items in multiple matrix sampling on the accuracy of estimates of the population mean. Data were obtained from a sample of 600 high school students for a 36-item mathematics test and a 40-item vocabulary test, both subtests of the Iowa Tests of Educational…

Descriptors: Achievement Tests, Difficulty Level, Item Analysis, Item Sampling