Descriptor
| Comparative Analysis | 1 |
| Control Groups | 1 |
| Effect Size | 1 |
| Experimental Groups | 1 |
| Hypothesis Testing | 1 |
| Sample Size | 1 |
Source
| Journal of Educational… | 1 |
Author
| Wilcox, Rand R. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Research | 1 |
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Peer reviewedWilcox, Rand R. – Journal of Educational Statistics, 1985
This paper describes how to determine whether enough observations have been sampled to be reasonably certain that a correct decision will be made about how the difference between the means of an experimental and control group compares to a constant specified by the experimenter. Equal variances are not assumed. (Author/BW)
Descriptors: Comparative Analysis, Control Groups, Effect Size, Experimental Groups
