选择函数类型,一定要选对,然后输入同一函数的两组或多组X、Y值.按AC,再按SHIFT 1 7 1或2或3 = 求出A、B、C等系数,就可以得出关系式.开始新的计算前要按 SHIFT 9 3 = 清除上次的记录.
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线性回归方程用计算器求的步骤:
线性方程:例如五组数据:1对应0.025,2对应0.050,3对应0.075,4对应0.100,5对应0.125,在计算器上按mode健,选择REG线性模式,找到计算器上“M+”键,输入数据:按键:1,0.025 M+(此时显示n=1)2,0.050M+ 3,0.075M+ 4,0.100M+ 5,0.125M+。