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On the Use of the G Index in O-, P-, R-, S-, and T- Analyses.
Peer reviewed Peer reviewed
Vegelius, Jan; Edvardsson, Bo – Educational and Psychological Measurement, 1979
The G index and its generalizations in the six basic factor analytic designs are discussed. G should be used if there is no mutual direction of all the variables. G should also be used if the scale center is more suitable as a reference point than the mean value. (Author/CTM)
Descriptors: Correlation, Factor Analysis, Nonparametric Statistics, Q Methodology
Significance Tests for the G-Index.
Peer reviewed Peer reviewed
Vegelius, Jan – Educational and Psychological Measurement, 1981
The G index is a measure of the similarity between individuals over dichotomous items. Some tests for the G-index are described. For each case an example is included. (Author/GK)
Descriptors: Hypothesis Testing, Mathematical Formulas, Mathematical Models, Nonparametric Statistics
A G Index Generalization for Trichotomized Data.
Peer reviewed Peer reviewed
Vegelius, Jan – Educational and Psychological Measurement, 1979
The G index is a measure of similarity between pairs of dichotomized items. The G index is generalized here to the case where items are trichotomized. (JKS)
Descriptors: Correlation, Item Analysis, Nonparametric Statistics, Technical Reports