Python实现多元线性回归

总目录：Python数据分析整理

本文基本是对文章的整理，修改了一些我这个版本跑不通的地方，多加了一个模型保存部分而已。整理后用于之后使用。

原作者大佬文章地址：Python实现多元线性回归

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数据集

TV	radio	newspaper	sales
230.1	37.8	69.2	22.1
44.5	39.3	45.1	10.4
17.2	45.9	69.3	9.3
151.5	41.3	58.5	18.5
180.8	10.8	58.4	12.9
8.7	48.9	75	7.2
57.5	32.8	23.5	11.8
120.2	19.6	11.6	13.2
8.6	2.1	1	4.8
199.8	2.6	21.2	10.6
66.1	5.8	24.2	8.6
214.7	24	4	17.4
23.8	35.1	65.9	9.2
97.5	7.6	7.2	9.7
204.1	32.9	46	19
195.4	47.7	52.9	22.4
67.8	36.6	114	12.5
281.4	39.6	55.8	24.4
69.2	20.5	18.3	11.3
147.3	23.9	19.1	14.6
218.4	27.7	53.4	18
237.4	5.1	23.5	12.5
13.2	15.9	49.6	5.6
228.3	16.9	26.2	15.5
62.3	12.6	18.3	9.7
262.9	3.5	19.5	12
142.9	29.3	12.6	15
240.1	16.7	22.9	15.9
248.8	27.1	22.9	18.9
70.6	16	40.8	10.5
292.9	28.3	43.2	21.4
112.9	17.4	38.6	11.9
97.2	1.5	30	9.6
265.6	20	0.3	17.4
95.7	1.4	7.4	9.5
290.7	4.1	8.5	12.8
266.9	43.8	5	25.4
74.7	49.4	45.7	14.7
43.1	26.7	35.1	10.1
228	37.7	32	21.5
202.5	22.3	31.6	16.6
177	33.4	38.7	17.1
293.6	27.7	1.8	20.7
206.9	8.4	26.4	12.9
25.1	25.7	43.3	8.5
175.1	22.5	31.5	14.9
89.7	9.9	35.7	10.6
239.9	41.5	18.5	23.2
227.2	15.8	49.9	14.8
66.9	11.7	36.8	9.7
199.8	3.1	34.6	11.4
100.4	9.6	3.6	10.7
216.4	41.7	39.6	22.6
182.6	46.2	58.7	21.2
262.7	28.8	15.9	20.2
198.9	49.4	60	23.7
7.3	28.1	41.4	5.5
136.2	19.2	16.6	13.2
210.8	49.6	37.7	23.8
210.7	29.5	9.3	18.4
53.5	2	21.4	8.1
261.3	42.7	54.7	24.2
239.3	15.5	27.3	15.7
102.7	29.6	8.4	14
131.1	42.8	28.9	18
69	9.3	0.9	9.3
31.5	24.6	2.2	9.5
139.3	14.5	10.2	13.4
237.4	27.5	11	18.9
216.8	43.9	27.2	22.3
199.1	30.6	38.7	18.3
109.8	14.3	31.7	12.4
26.8	33	19.3	8.8
129.4	5.7	31.3	11
213.4	24.6	13.1	17
16.9	43.7	89.4	8.7
27.5	1.6	20.7	6.9
120.5	28.5	14.2	14.2
5.4	29.9	9.4	5.3
116	7.7	23.1	11
76.4	26.7	22.3	11.8
239.8	4.1	36.9	12.3