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| Aiken, Lewis R. | 3 |
| Aiken, Timothy A. | 1 |
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| Journal Articles | 3 |
| Reports - Research | 3 |
| Reports - Descriptive | 1 |
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Peer reviewedAiken, Lewis R. – Educational and Psychological Measurement, 1987
Formulas for transforming scores and statistics on a rating scale having any number of categories to a scale having a different number of categories are described. To illustrate the use of one of the formulas, the means and variances of items on six forms of a course evaluation questionnaire were compared. (Author/LMO)
Descriptors: Mathematical Models, Rating Scales, Scoring, Statistical Studies
Peer reviewedAiken, Lewis R.; Aiken, Timothy A. – Educational and Psychological Measurement, 1986
Three exact probability tests, counterparts of t tests for single sample, independent samples, and dependent samples, are described for data obtained from ratings on "m" scales by a single rater or on a single scale by "n" raters. (LMO)
Descriptors: Nonparametric Statistics, Probability, Rating Scales, Statistical Distributions
Peer reviewedAiken, Lewis R. – Educational and Psychological Measurement, 1985
Procedures are described for determining the statistical significance of a set of ratings made on bidirectional (B) scales. B and its statistical significance can be determined on samples of items or raters. The statistical significance of a mean of B values can be assessed by applying a normal approximation test. (Author/DWH)
Descriptors: Higher Education, Rating Scales, Research Methodology, Scoring
