Descriptor
| Comparative Analysis | 1 |
| Equations (Mathematics) | 1 |
| Error of Measurement | 1 |
| Mathematical Models | 1 |
| Maximum Likelihood Statistics | 1 |
| Robustness (Statistics) | 1 |
| Sampling | 1 |
Source
| Journal of Educational… | 1 |
Author
| Wilcox, Rand R. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Evaluative | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedWilcox, Rand R. – Journal of Educational Statistics, 1990
Recently, C. E. McCulloch (1987) suggested a modification of the Morgan-Pitman test for comparing the variances of two dependent groups. This paper demonstrates that there are situations where the procedure is not robust. A subsample approach, similar to the Box-Scheffe test, and the Sandvik-Olsson procedure are also assessed. (TJH)
Descriptors: Comparative Analysis, Equations (Mathematics), Error of Measurement, Mathematical Models
