下面是matlab代码,用x12345来对y进行线性回归,使用matlab
y = [4111.28 3988.86 3876.96 3711.10 3560.64 3576.58 3642.22 3813.44 3978.44 4138.36 4222.02 4297.52 4370.04 4423.58 4479.64 4555.04 4609.92 4782.50 4940.76 5092.84 5239.66 5399.66 5433.56];
x1 = [4824.9 4836.1 4797.4 4760.8 4766.8 4790.0 4818.2 4836.8 4857.5 4896.9 4955.3 4986.9 4657.9 4729.0 4901.9 4964.4 5161.2 5191.1 5236.0 5271.4 5293.6 5069.9 5209.1];
x2 = [854.5565681 850.4922022 846.6527197 842.6630137 837.6143791 831.439267 826.0159632 801.4395263 798.0372148 793.5651458 783.8341571 791.1950336 786.5368768 783.244408 776.9827352 771.4338807 762.7527658 756.4821619 697.2164235 639.408932 630.5829084 630.7676172 635.281577];
x3 = [11.52 12.63 11.78 14.26 13.29 11.29 12.56 11.22 14.03 13.24 11.28 11.43 12.59 11.98 13.77 12.98 13.55 11.38 12.44 15.66 12.44 12.56 15.66];
x4 = [722.5 699.5 814.5 765.3 774.5 896.3 764.5 655.4 811.3 802.2 756.5 832.1 657.3 748.5 865.4 766.2 864.3 741.2 684.5 773.1 979.3 872.4 877.5];
x5 = [0.63 0.65 0.47 0.66 0.59 0.47 0.51 0.57 0.67 0.67 0.48 0.67 0.67 0.56 0.63 0.48 0.54 0.66 0.63 0.67 0.55 0.57 0.61];