步骤

自由度

残差平方和

0

1

16.500

14.9075

1

2

16.207

15.1189

2

3

15.605

13.4344

3

4

13.946

5.2873

4

5

13.491

4.5058

5

6

12.622

1.1919

6

7

12.464

2.2265

7

8

12.304

3.2483

8

9

11.997

3.3706

9

10

11.964

5.1699

10

11

11.775

6.0101

11

12

6.010

7.4879

12

13

11.661

9.3159

13

14

11.570

10.7560

14

15

11.503

12.3480

15

16

11.401

13.7257

16

17

11.313

15.1847

17

18

11.229

16.6689

18

19

11.211

18.5652

19

20

11.119

20.0000