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Covariance analysis for the effect of group membership on marital quality
| Variables | Statistical variables | Sum of squares | Degree of freedom | Mean squares | F | Confidence interval | Effect size | Test power |
|---|---|---|---|---|---|---|---|---|
| Marital quality | Pretest | 82.07 | 1 | 82.07 | 6.41 | 0.0001 | 0.19 | 0.68 |
| Group membership | 1318.16 | 1 | 1318.16 | 102.96 | 0.0001 | 0.79 | 1 | |
| Error | 345.66 | 27 | 12.80 | |||||
| Total | 37,980 | 30 |
