用最小二乘法 求ab y=ax+b用最小二乘法 算一些数据·求帮助 X=871.5897.1904.3919.2935.0950.0965.0981.01028.01047.01061.01075.01086.01094.01102.01112.01125.01251.11259.41240.01245.61257.21363.61385.11423.21456.41492.71538.01581.01633.01695.01755.01961.9y=735000 802317 854638 867153 925700 956293 1029420 1106255 1181155 1285023 1378574 1421817 1504785 1613977 17596111924978 2054504 2225922 2443709 2636078 2762080 2972629 3844266 39994154399637 4676056 5131804 5705364611571966700

问题描述:

用最小二乘法 求ab y=ax+b
用最小二乘法 算一些数据·求帮助 X=871.5
897.1
904.3
919.2
935.0
950.0
965.0
981.0
1028.0
1047.0
1061.0
1075.0
1086.0
1094.0
1102.0
1112.0
1125.0
1251.1
1259.4
1240.0
1245.6
1257.2
1363.6
1385.1
1423.2
1456.4
1492.7
1538.0
1581.0
1633.0
1695.0
1755.0
1961.9
y=735000 802317 854638 867153 925700 956293 1029420 1106255 1181155 1285023 1378574 1421817 1504785 1613977 1759611
1924978 2054504 2225922 2443709 2636078 2762080 2972629 3844266 3999415
4399637 4676056 5131804 5705364
6115719
6670089
6897189
7391465
8099029

在excle里输入数字,再生成图形,散点图,再选择有个带f(x)的模式图形,他就会给出函数,就可以看出ab值了,本来想插图片的,可是1级插不了