ThistleZhang

1.一元线性回归散点图%最大积雪深度与灌溉面积之间的关系%%绘制散点图，并添加趋势线%x=[15.2,10.4,21.2,18.6,26.4,23.4,13.5,16.7,24,19.1]; %%最大积雪深度y=[28.6,19.3,40.5,35.6,48.9,45.0,29.2,34.1,46.7,37.4]; %%灌溉面积plot(x,y,'or'); %%绘制散点图xlab

1常见模型1.1指数模型估计%%非线性回归，指数模型x=[0.5,1.5,2.5,3.5,4.5,5.5,6.5,7.5,8.5,9.5,10.5,11.5,12.5,13.5,14.5,15.5];y=[26300,25100,19900,15500,11500,9800,5200,4600,3200,2300,1700,1200,900,700,600,500];plot(x,y