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Descriptive Statistical Attributes Of Special Education Datasets, Valerie Felder
Descriptive Statistical Attributes Of Special Education Datasets, Valerie Felder
Wayne State University Dissertations
ABSTRACT
Descriptive Statistical Attributes of Special Education Data Sets
by
VALERIE FELDER
December 2013
Advisor: Dr. Shlomo Sawilowsky
Major: Educational Evaluation and Research
Degree: Doctor of Philosophy
Micceri (1989) examined the distributional characteristics of 440 large-sample achievement and psychometric measures. All the distributions were found to be nonnormal at alpha = .01. Micceri indicated three factors that might contribute to a non-Gaussian error distribution in the population. The first factor is subpopulations within a target population. The second factor is ceiling effects and the third factor is treatment effects that may change the location parameter, variability, or shape of the …