i've run an ivreg2 on my model specification adding two options:
bw + robust=>heteroskedastic and autocorrelation-robust standard errors.
Then i check with "abar" if there is still autocorrelation in the residuals,
and the test says that there is!!! However, it shouldn'be since i've corrected
for that...how can you explain this puzzle???
Thank you
Valerio
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