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Cannot calculate robust standard errors (vcovHC): multicollinearity and NaN error

r,standard-error,robust

After doing some reading and following @DominicComtois suggestion, I think here I will have to go with HC1. HC3, HC4 (Long and Ervin 2000, Hayes and Cai 2007), or HC4m (Cribari-Neto and Silva 2011) would be better, but they all give NaN results. The problem with HC0 is that it...