Table 1.
Results of the Rasch rating scale model (RSM) | ||||
---|---|---|---|---|
Item No. | Item difficulty (Logit) | Item Fit (mean squares) |
RMSR (root-mean-square residual) (observation–expectation) | |
Infit | Outfit | |||
(3) | 1.13 | 1.48 | 1.52 | 1.16 |
(6) | 0.98 | 1.47 | 1.44 | 1.20 |
(12) | −0.37 | 1.31 | 1.28 | 1.05 |
(15) | −0.85 | 1.16 | 1.23 | 0.85 |
(4) | −0.05 | 1.15 | 1.11 | 1.08 |
(9) | −0.05 | 1.08 | 1.06 | 1.04 |
(8) | −0.31 | 0.98 | 1.04 | 0.93 |
(16) | −1.02 | 1.00 | 0.94 | 0.75 |
(5) | 0.88 | 0.99 | 0.92 | 1.01 |
(1) | 1.25 | 0.97 | 0.90 | 0.91 |
(7) | −0.37 | 0.95 | 0.93 | 0.90 |
(2) | 0.64 | 0.88 | 0.85 | 0.99 |
(11) | −1.02 | 0.88 | 0.86 | 0.70 |
(14) | −0.43 | 0.81 | 0.80 | 0.81 |
(13) | −0.31 | 0.79 | 0.74 | 0.83 |
(10) | −0.10 | 0.68 | 0.68 | 0.82 |
Item Mean (SD): 45.8 (14.1), and Person Mean (SD): 36.6 (7.3).