Table 1 Empirical simulation-based estimates of test-retest correlation Corr(S test , S retest ) in equation (14)
From: Statistical power as a function of Cronbach alpha of instrument questionnaire items
Corr(S test , S retest ) | ||||
|---|---|---|---|---|
Total N = 30 | Total N = 50 | |||
C α | k = 5 | k = 10 | k = 5 | k = 10 |
0.1 | 0.10 | 0.10 | 0.10 | 0.10 |
0.2 | 0.20 | 0.20 | 0.20 | 0.20 |
0.3 | 0.30 | 0.29 | 0.30 | 0.30 |
0.4 | 0.39 | 0.39 | 0.40 | 0.39 |
0.5 | 0.49 | 0.50 | 0.49 | 0.50 |
0.6 | 0.59 | 0.59 | 0.60 | 0.60 |
0.7 | 0.69 | 0.69 | 0.70 | 0.70 |
0.8 | 0.79 | 0.80 | 0.80 | 0.79 |
0.9 | 0.90 | 0.90 | 0.90 | 0.90 |