Table 1b:
Raw score | Count | Measure | Model error | Infit | Outfit | |||
---|---|---|---|---|---|---|---|---|
MNSQ | ZSTD | MNSQ | ZSTD | |||||
Mean | 296.4 | 81.0 | 0.00 | 0.11 | 0.99 | –0.1 | 1.00 | –0.1 |
SD | 53.0 | 0.0 | 0.58 | 0.01 | 0.23 | 1.6 | 0.24 | 1.6 |
Max | 388.0 | 81.0 | 1.25 | 0.13 | 1.54 | 3.3 | 1.56 | 3.5 |
Min | 178.0 | 81.0 | –1.12 | 0.10 | 0.60 | –2.8 | 0.62 | –2.9 |
Real RMSE | 0.11 | Adj. SD | 0.57 | Separation | 5.14 | Person reliability | 0.96 | |
Model RMSE | 0.11 | Adj. SD | 0.57 | Separation | 5.37 | Person reliability | 0.97 | |
SE of Item mean = 0.10 |
Umean = 0.000 uscale = 1.000
Item raw score-to-measure correlation = –1.00
2916 data points. Approximate log-likelihood chi-square: 8390.88