Table 4 Fit statistics and thresholds of selected nine items (n = 126)
From: Refinement of an instrument measuring science teachers’ knowledge of language through mixed method
Item | Difficulty δ | Outfit MNSQ | Outfi.t | Infit MNSQ | Infit.t | τ 1 | τ 2 | τ 3 | τ 4 |
|---|---|---|---|---|---|---|---|---|---|
LQ01R | -0.71 | 1.35 | 2.60 | 1.21 | 1.64 | -2.55 | -1.06 | -0.60 | 1.39 |
LQ03R | -1.14 | 1.23 | 1.58 | 1.15 | 1.05 | -2.98 | -1.49 | -1.04 | 0.95 |
LQ05 | -1.20 | 1.26 | 1.74 | 1.13 | 0.90 | -3.03 | -1.54 | -1.09 | 0.90 |
LQ07Ra | -2.59 | 0.83 | -1.12 | 0.78 | -1.44 | -4.43 | -2.94 | -2.48 | -0.49 |
LQ12R | -1.56 | 0.94 | -0.37 | 0.89 | -0.68 | -3.39 | -1.91 | -1.45 | 0.54 |
LQ18 | -1.62 | 0.96 | -0.25 | 0.97 | -0.18 | -3.46 | -1.97 | -1.51 | 0.48 |
LQ20Ra | -2.86 | 0.88 | -0.79 | 0.92 | -0.46 | -4.70 | -3.21 | -2.75 | -0.76 |
LQ24Rb | -2.14 | 0.73 | -1.75 | 0.72 | -1.84 | -3.98 | -2.49 | -2.03 | -0.04 |
LQ100 | -1.49 | 1.29 | 1.77 | 1.19 | 1.24 | -3.33 | -1.84 | -1.39 | 0.60 |