Descriptor
| Analysis of Variance | 2 |
| Simulation | 2 |
| Statistical Distributions | 2 |
| Equations (Mathematics) | 1 |
| Models | 1 |
| Nonparametric Statistics | 1 |
| Power (Statistics) | 1 |
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| Journal Articles | 2 |
| Reports - Evaluative | 2 |
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Peer reviewedToothaker, Larry E.; Newman, De – Journal of Educational and Behavioral Statistics, 1994
Compared the analysis of variance (ANOVA) "F" and several nonparametric competitors for two-way designs for empirical alpha and power through simulation. Results suggest the ANOVA "F" suffers from conservative alpha and power for the mixed normal distribution, but is generally recommended. (Author/SLD)
Descriptors: Analysis of Variance, Nonparametric Statistics, Simulation, Statistical Distributions
Peer reviewedWilcox, Rand R. – Psychometrika, 1994
A generalization of the usual random-effects model based on trimmed means is proposed. The resulting test of no differences among J randomly sampled groups has advantages in terms of Type I errors and can yield gains in power when distributions have heavy tails and outliers. (SLD)
Descriptors: Analysis of Variance, Equations (Mathematics), Models, Power (Statistics)
