Table 2 Descriptive analysis of items
Item | M | SD | Skewness | Kurtosis | Corrected item-total correlation | Cronbach’s alpha if item deleted |
|---|---|---|---|---|---|---|
1 | 94.04 | 16.93 | -3.21 | 10.73 | 0.48 | 0.84 |
2 | 93.25 | 18.75 | -3.32 | 11.53 | 0.48 | 0.84 |
3 | 91.68 | 18.39 | -2.46 | 6.25 | 0.54 | 0.83 |
4 | 91.16 | 17.63 | -2.33 | 6 | 0.55 | 0.84 |
5 | 82.79 | 22.51 | -1.14 | 0.55 | 0.32 | 0.85 |
6 | 57.95 | 27.98 | -0.12 | -0.58 | 0.44 | 0.84 |
7 | 79.24 | 21.21 | -0.81 | 0.38 | 0.51 | 0.84 |
8 | 77.77 | 23.10 | -0.75 | -0.11 | 0.46 | 0.84 |
9 | 74.84 | 21.93 | -0.53 | -0.30 | 0.35 | 0.84 |
10 | 84.72 | 17.42 | -0.78 | -0.31 | 0.50 | 0.84 |
11 | 59.47 | 24.83 | 0.09 | -0.63 | 0.47 | 0.84 |
12 | 64.12 | 27.65 | -0.52 | -0.30 | 0.36 | 0.85 |
13 | 89.70 | 16.42 | -1.51 | 1.69 | 0.40 | 0.84 |
14 | 83.73 | 23.20 | -1.48 | 1.88 | 0.51 | 0.84 |
15 | 90.06 | 16.92 | -1.77 | 3.04 | 0.44 | 0.84 |
16 | 97.49 | 8.50 | -3.58 | 13.12 | 0.27 | 0.85 |
17 | 91.63 | 19.64 | -2.90 | 9.04 | 0.54 | 0.83 |
18 | 90.48 | 20.56 | -2.60 | 7.07 | 0.55 | 0.83 |