Measuring English Grammar Test: A Rasch Analysis Approach
Table 1:
| (N = 1694, i = 60) | Item – Person Interaction | |||
| Item Location | Person Location | |||
| Mean | 0.00 | -0.31 | ||
| SD | 1.44 | 0.72 | ||
| MnSq (Infit & Outfit) | 1.00 | 0.99 | 1.00 | 0.99 |
| z-std (Infit & Outfit) | -0.2 | -0.2 | 0.0 | 0.0 |
| Maximum Measure | 2.90 | 2.62 | ||
| Minimum Measure | -4.82 | -2.26 | ||
| Reliability Indices | ||||
| Separation | 20.53 | 2.03 | ||
| Reliability | 1.00 | 0.80 | ||
| Model error | 0.06 | 0.31 | ||
| Cronbach’s Alpha | 0.82 | |||