Descriptor
| Analysis of Covariance | 1 |
| Computer Simulation | 1 |
| Hypothesis Testing | 1 |
| Nonparametric Statistics | 1 |
| Power (Statistics) | 1 |
| Statistical Distributions | 1 |
| Statistical Significance | 1 |
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| Journal of Educational… | 1 |
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| Algina, James | 1 |
| Olejnik, Stephen F. | 1 |
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Peer reviewedOlejnik, Stephen F.; Algina, James – Journal of Educational Statistics, 1984
Using computer simulation, parametric analysis of covariance (ANCOVA) was compared to ANCOVA with data transformed using ranks, in terms of proportion of Type I errors and statistical power. Results indicated that parametric ANCOVA was robust to violations of either normality or homoscedasticity, but practiced significant power differences favored…
Descriptors: Analysis of Covariance, Computer Simulation, Hypothesis Testing, Nonparametric Statistics
