问题如下:
Based on Exhibit 1, the standard error of the estimate is closest to:
选项:
A.0.044558
0.044558
0.045850
0.050176
解释:
B is correct. The standard error of the estimate (SEE) for a linear regression model with one independent variable is calculated as:
SEE==0 045850
表1中最后一列的表头(Yi-Y^)2(Yi-Y)2是什么意思,R2应该是(Y^-Y)2/(Yi-Y)2吗?而且SEE应该是用(Yi-Y^)2加总来计算,为什么直接用(Yi-Y^)2(Yi-Y)2加总的数值来计算?