Table 3.
Power across Smaller and Larger Values of Autocorrelation and Standardized Mean Difference
| Number of Tiers with Clear Change | |||
|---|---|---|---|
| 2 of 2 | At Least 2 of 3 | 3 of 3 | |
| Dual-Criteria Method | |||
| a < 0.20 | .605 | .831 | .492 |
| a > 0.20 | .573 | .800 | .459 |
| SMD < 3 | .406 | .679 | .269 |
| SMD > 3 | .782 | .958 | .694 |
| Rater 1 | |||
| a < 0.20 | .867 | .969 | .815 |
| a > 0.20 | .804 | .859 | .776 |
| SMD < 3 | .675 | .821 | .603 |
| SMD > 3 | 1 | 1 | 1 |
| Rater 2 | |||
| a < 0.20 | .585 | .831 | .462 |
| a > 0.20 | .467 | .694 | .353 |
| SMD < 3 | .295 | .551 | .167 |
| SMD > 3 | .759 | .972 | .653 |
Note. The highlighted numbers identify combinations of tiers where power was at least .80 regardless of the parameter values. a = autocorrelation, SMD = standardized mean difference