接八楼:从计量方法方面,一般加vce()选项。描述如下
This entry describes the vce() option, which is common to most estimation commands.
vce() specifies how to estimate the variance-covariance matrix (VCE) corresponding to
the parameter estimates. The standard errors reported in the table of parameter
estimates are the square root of the variances (diagonal elements) of the VCE.