关于数学线性回归问题。求技术帝解答！高分！

n = | 1 _ | 2 | 3 _ | 4 _ | 5 _ | 6 _ | 7 | 8 _ | 9 _ | 10 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 65438

y =[-8 | 11 | 22 |-8 |-8 |-12 | 8 |-16 |-8 | 5 | 7 _ | 28 | 5 _ | 30 | 2 _ | 7 _ | 11 | 8 _ | 15 | 33 |-6 _ |-4 |-26 | 36 | 3 _ | 39 | 5

将Y从小到大重新排序，相应地将xn重新排序，便于直观判断X和Y的相关性，x1一般与Y呈线性关系；X2、x3、x4、y是非线性的，比较复杂，一时之间很难做出比较准确的判断，也很难做进一步的回归分析。

n = | 1 _ | 2 _ | 3 _ | 4 _ | 5 _ | 6 _ | 7 | 8 _ | 9 _ | 10 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 65438

n = | 23 | 8 _ | 6 _ | 1 _ | 4 _ | 5 _ | 9 | 21 | 22 | 28 | 15 | 25 | 10 | 13 | 27 | 11 | 16 | 7 _ | 18 | 2 _ | 17

y =[-26 |-16 |-12 |-8 |-8 |-8 |-6 |-4 | 1 _]2 _ | 3 _ | 5 _ | 5 _ | 7 _ | 7 _ | 8 | 8 _ | 111 | 15 | 22 | 28 | 28

n = | _ 1 _ | _ 2 _ | _ 3 _ | _ 4 _ | _ 5 _ | 6 _ | _ 7 _ | _ 8 _ | _ 9 _ | _ 10 _ | 11 | _ 12 | _ 13 | _ 14 |

n = | 23 _ | _ 8 _ | _ 6 _ _ | _ 1 _ | _ 4 _ | _ 5 _ | _ 9 | _ 21 | _ 22 | _ 28 _ | _ 15 | _ 25 | _ 10 | _ 13 |

y =[-26 _ |-16 |-12 _ |-8 _ |-8 _ |-8 _ |-6 _ _ |-4 _ _ | 1 _ _]2 _ | _ 3 _ | _ 5 _ | _ 5 _ |

x 1 = |-13 |-7.2 |-8.3 |-6.1 | 1.9 |-1.3 |-3.8 |-3.2 |-1.2 |-1.3 | 1.9 | 3.7 |-6.8 | 1.9 _ |

n = | 15 _ | 16 _ | 17 _ | 18 _ | 19 _ | 20 _ | 21 _ | 22 _ | 23 _ | 24 _ | 25 _ | 26 _ | 27 _ | 28 _ |

y = | _ 5 _ | _ 7 _ | _ 7 _ | _ 8 _ | _ 8 _ | _ 111515 _ | 22 _ | 28 _ | 30 _ | 33 _ | 36 _ | 39 _ |

n = | 27 _ | 11 _ | 16 _ | _ 7 _ | 18 _ | _ 2 _ | 19 _ | _ 3 _ | 12 _ | 14 _ | 20 _ | 24 _ | 26 _ |

x 1 = | 3.3 | 3.7 _ | 9.9 | _ 14 _ | _ 4 _ |-0.2 | 7.7 _ | 9.8 _ | 7.3 _ | 14.8 | 14，1 | 10 _ | 10.3 | 18 _ |

x1=[-6.1，-0.2，7.3，1.9，-1.3，-8.3，14，-7.2，-3.8，-6.8，3.7，14.8，1.9，14.1.1.9，9

n = | 1 _ | 2 _ | 3 _ | 4 _ | 5 _ | 6 _ | 7 | 8 _ | 9 _ | 10 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 65438

n = | 23 | 8 _ | 6 _ | 1 _ | 4 _ | 5 _ | 9 | 21 | 22 | 28 | 15 | 25 | 10 | 13 | 27 | 11 | 16 | 7 _ | 18 | 2 _ | 17

y =[-26 |-16 |-12 |-8 |-8 |-8 |-6 |-4 | 1 _]2 _ | 3 _ | 5 _ | 5 _ | 7 _ | 7 _ | 8 | 8 _ | 111 | 15 | 22 | 28 | 28

x2 = |-9 |-2 |-4 | 5 |-6 |-1 |-2 | 0 _ | 2 _ | 2 | 0 _ | 0 _ | 2 |-2 | 6 _ | 2 |-2 |-3 |-1 _ | 6 | 9 _ | 2 _ | 0 | 2 _ | 7 _ | 3 _ |

n = | 1 _ | 2 _ | 3 _ | 4 _ | 5 _ | 6 _ | 7 | 8 _ | 9 _ | 10 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 65438

n = | 23 | 8 _ | 6 _ | 1 _ | 4 _ | 5 _ | 9 | 21 | 22 | 28 | 15 | 25 | 10 | 13 | 27 | 11 | 16 | 7 _ | 18 | 2 _ | 17

y =[-26 |-16 |-12 |-8 |-8 |-8 |-6 |-4 | 1 _]2 _ | 3 _ | 5 _ | 5 _ | 7 _ | 7 _ | 8 | 8 _ | 111 | 15 | 22 | 28 | 28

x3 = | 13 | 6 | 2 _ | 1 _ |-6 |-1 _ | 0 | 8 |-6 | 5 | 12 | 1 _ | 13 |-7 | 11 |-1 |-1 |-11 | 2 | 65438+

x4 =-5 |-7 |-13 | 4 |-3 | 3 | 13 |-1 | 3 | 7 |-7 | 8 | 7 |-5 | 8 |-3 | 13 |-10 | 6 | 6 _ | 0 _ | 8 _ | 14 | 15 | 38 | 13 | 29 | 3