From: Exploring student understanding of the engineering design process using distractor analysis
Statistic | Student (N = 128) | Item (N = 20) |
---|---|---|
Location (logits) | ||
M | 0.11 | 0.00 |
SD | 0.92 | 0.63 |
Standard error | ||
M | 0.52 | 0.20 |
SD | 0.07 | 0.01 |
Infit MSE | ||
M | 1.00 | 1.00 |
SD | 0.14 | 0.14 |
Outfit MSE | ||
M | 1.01 | 1.01 |
SD | 0.22 | 0.21 |
Separation statistics | ||
Reliability of separation | 0.68 | 0.90 |
Chi-Square | 332.7* | 181.7* |
Degrees of freedom | 127 | 19 |