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...hat : nicht-numerisches Argument f?r bin?ren Operator/ something like: /Error in 1 - diaghat: non-numeric argument for binary operator/ > Any ideas what this error is trying to tell me? *GSm_inc.pool * is estimated like this: > GSm_inc.pool <- plm(GS ~ log(I_EQON) + ... + PAGRI, + data = pmen, na.action=na.exclude, model="pooling") /summary/(*GSm_in.pool*) works perfectly as well and all the variables are numeric. Thanks Manu -- View this message in context: http://r.789695.n4.nabble.com/Error-using-coeftest-with-a-heteroskedasticity-consistent-estimation-of-the-covar-tp410...