数值分析的作业

数值分析的作业function [xbar,s]=exA_2(x) n=length(x); % 解法1. for 循环 xbar =0; xs =0; for t=1:n xbar = xbar + x(t); xs = xs + x(t)^2; end xbar=xbar/n; s=sqrt((xs-n*xbar^2)/(n-1));