Y=-0.51595+0.06676X R平方=0.7759
(0.6224) (0.0085)
请问各位高手(0.6224)和(0.0085)是怎么计算出来的,书上和我说括号里的内容相应为(估计量的标准误),是用什么公试计算出来的
商店名 | 销售收入X | 利润总额Y | 回归值 | 残差 |
1
| 160 | 12.8 | 10.2 | 2.6 |
2 | 151.8 | 8.9 | 9.6 | -0.7 |
3 | 108.1 | 4.1 | 6.7 | -2.6 |
4 | 102.8 | 2.8 | 6.3 | -3.5 |
5 | 89.3 | 8.4 | 5.4 | 3.0 |
6 | 68.7 | 4.3 | 4.1 | 0.2 |
7 | 66.8 | 4 | 3.9 | 0.1 |
8 | 56.2 | 4.5 | 3.2 | 1.3 |
9 | 55.7 | 3.1 | 3.2 | -0.1 |
10 | 53 | 2.3 | 3 | -0.7 |
11 | 49.3 | 4.1 | 2.8 | 1.3 |
12 | 43 | 2.0 | 2.4 | -0.4 |
13 | 42.9 | 1.3 | 2.3 | -1.0 |
14 | 37.6 | 1.8 | 2.0 | -0.2 |
15 | 29 | 1.8 | 1.4 | 0.4 |
16 | 27.4 | 1.4 | 1.3 | 0.1 |
17 | 26.2 | 2.0 | 1.2 | 0.8 |
18 | 22.4 | 0.9 | 1.0 | -0.1 |
19 | 22.2 | 1 | 1.0 | 0 |
20 | 20.7 | 0.5 | 0.9 | -0.4 |