| 编码 | 平均值 | 变量 均值 | 标准差 | 偏度 | 峰度 | ||
| 统计 | 标准 误差 | 统计 | 标准 误差 | ||||
| XA1 | 4.15 | 4.21 | 1.065 | −1.131 | 0.106 | 0.961 | 0.212 |
| XA2 | 4.28 | 0.844 | −1.385 | 0.106 | 2.532 | 0.212 | |
| XA3 | 4.23 | 0.886 | −1.114 | 0.106 | 1.266 | 0.212 | |
| XB1 | 4.23 | 4.27 | 0.856 | −1.005 | 0.106 | 0.697 | 0.212 |
| XB2 | 4.30 | 0.923 | −1.149 | 0.106 | 1.075 | 0.212 | |
| XB3 | 4.16 | 0.973 | −1.312 | 0.106 | 1.642 | 0.212 | |
| XB4 | 4.39 | 0.810 | −1.161 | 0.106 | 1.503 | 0.212 | |
| XC1 | 4.46 | 4.37 | 0.847 | −1.139 | 0.106 | 0.825 | 0.212 |
| XC2 | 4.38 | 0.906 | −1.307 | 0.106 | 1.350 | 0.212 | |
| XC3 | 4.40 | 0.899 | −1.260 | 0.106 | 1.212 | 0.212 | |
| XC4 | 4.22 | 1.021 | −1.293 | 0.106 | 1.223 | 0.212 | |
| XD1 | 4.18 | 4.25 | 0.855 | −1.525 | 0.106 | 3.130 | 0.212 |
| XD2 | 4.49 | 0.749 | −1.557 | 0.106 | 2.917 | 0.212 | |
| XD3 | 4.15 | 1.047 | −1.011 | 0.106 | 0.537 | 0.212 | |
| XD4 | 4.38 | 0.805 | −1.250 | 0.106 | 1.664 | 0.212 | |
| XD5 | 4.09 | 0.922 | −1.086 | 0.106 | 1.013 | 0.212 | |
| XD6 | 4.33 | 0.782 | −1.350 | 0.106 | 2.076 | 0.212 | |
| XD7 | 4.13 | 0.957 | −1.162 | 0.106 | 1.194 | 0.212 | |