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Direct linkMenil, Violeta C.; Ye, Ruili – MathAMATYC Educator, 2012
This study serves as a teaching aid for teachers of introductory statistics. The aim of this study was limited to determining various sample sizes when estimating population proportion. Tables on sample sizes were generated using a C[superscript ++] program, which depends on population size, degree of precision or error level, and confidence…
Descriptors: Sample Size, Probability, Statistics, Sampling
Peer reviewedPugh, Richard C. – Journal of Experimental Education, 1971
Descriptors: Attitude Measures, Item Analysis, Sampling, Statistical Studies
Download full textFarish, Stephen J. – 1984
The stability of Rasch test item difficulty parameters was investigated under varying conditions. Data were taken from a mathematics achievement test administered to over 2,000 Australian students. The experiments included: (1) relative stability of the Rasch, traditional, and z-item difficulty parameters using different sample sizes and designs;…
Descriptors: Achievement Tests, Difficulty Level, Estimation (Mathematics), Foreign Countries
