%例題6.2.1
%給出向量x和y，利用下面的程序代碼可以
%繪制散點(diǎn)圖、求出方差分析表、求出回歸線，
%并在一個(gè)圖像窗口中畫出散點(diǎn)圖和回歸線圖，
%還計(jì)算出可決系數(shù)r2和最小二乘回歸的估計(jì)標(biāo)準(zhǔn)誤差Sy
x=[255.7,263.3,275.4,278.3,296.7,309.3,315.8,318.8,330.0,340.2,350.7,367.3,381.3,406.5,430.8,451.5];
y=[116.5,120.8,124.4,125.5,131.7,136.2,138.7,140.2,146.8,149.6,153.0,158.2,163.2,170.5,178.2,185.9];
xx=x(end).*1.045.^(1:5);
p=0.95;
%%%%%%%%以下為計(jì)算部分不可改動(dòng)
xxhg1(x,y,xx,p);