Table 8.
Characteristics of participants who were aware or unaware of importance of sample size.
| unaware | aware | 95% CI for d | |
|---|---|---|---|
| (N = 61) | (N = 37) | ||
| Educational level | |||
| pre-degree | 2 (3.3%) | 6 (16.2%) | |
| 1st degree | 43 (70.5%) | 18 (48.6%) | |
| masters | 12 (19.7%) | 9 (24.3%) | |
| doctorate | 4 (6.6%) | 4 (10.8%) | |
| Statistics self-rating (self-report: 0–100) | |||
| mean (s.d.) | 49.9 (17.9) | 56.6 (17.7) | −14.15, 0.61 |
| Understand t-test (self-report: 1 = high, 4 = low) | |||
| mean (s.d.) | 2.66 (0.834) | 2.24 (0.683) | 0.1, 0.72 |
| Understand power (self-report: 1 = high, 4 = low) | |||
| mean (s.d.) | 2.90 (0.870) | 2.41 (0.832) | 0.15, 0.85 |
| Quiz: pre-training P-items correct | |||
| mean (s.d.) | 2.87 (1.49) | 3.92 (1.71) | −1.73, −0.37 |
| Quiz: post-training P-items correct | |||
| mean (s.d.) | 3.15 (1.57) | 4.11 (1.54) | −1.6, −0.32 |
| Quiz: pre-training S-items correct | |||
| mean (s.d.) | 1.46 (1.12) | 2.27 (1.45) | −1.37, −0.26 |
| Quiz: post-training S-items correct | |||
| mean (s.d.) | 1.59 (1.07) | 1.89 (1.26) | −0.8, 0.2 |