您好,用命令“”时,显示“Estimators do not save e(sigma) or e(rmse),sigma option not allowed”,将“igmamore”去掉,即“hausman FE1 RE1, constant”,与将“constant sigmamore”都去掉,即“hausman FE1 RE1”,一个是随机效应,一个是固定效应,那么“hausman FE1 RE1, constant sigmamore”、“hausman FE1 RE1, constant”、“hausman FE1 RE1”,到底哪个命令对呢?谢谢您的解答