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An Improvement over Guttman Scalogram Analysis: A Computer Program for Evaluating Cumulative, Nonparametric Scales of Dichotomous Items.
Peer reviewed Peer reviewed
Cziko, Gary A. – Educational and Psychological Measurement, 1984
Some problems associated with the criteria of reproducibility and scalability as they are used in Guttman scalogram analysis to evaluate cumulative, nonparametric scales of dichotomous items are discussed. A computer program is presented which analyzes response patterns elicited by dichotomous scales designed to be cumulative. (Author/DWH)
Descriptors: Scaling, Statistical Analysis, Test Construction, Test Items
Three Coefficients for Analyzing the Reliability and Validity of Ratings.
Peer reviewed Peer reviewed
Aiken, Lewis R. – Educational and Psychological Measurement, 1985
Three numerical coefficients for analyzing the validity and reliability of ratings are described. Each coefficient is computed as the ratio of an obtained to a maximum sum of differences in ratings. The coefficients are also applicable to the item analysis, agreement analysis, and cluster or factor analysis of rating-scale data. (Author/BW)
Descriptors: Computer Software, Data Analysis, Factor Analysis, Item Analysis
Wanted--Central Tendency and Variability of Test Norm Tables: How to Recover Them?
Peer reviewed Peer reviewed
Krus, David J.; Liang, Kun-Hsia T. – Educational and Psychological Measurement, 1984
An algorithm for estimation of means and standard deviations or raw scores underlying table values of standard test scores is presented. An application of a computer program, operationalizing the suggested algorithm, is discussed within the framework of a comparison of estimated and known table values for sample Minnesota Multiphasic Personality…
Descriptors: Algorithms, Estimation (Mathematics), Scores, Standardized Tests