x********4
发帖数: 405 | 1 when endogeneity problem is present, we find an IV to correct it. why many
authors want to run a reduced form first, i.e., run LHS on the IV plus other
controls, before 2SLS regressions? What does the coefficient of IV in the
reduced form regression mean? | s********t
发帖数: 247 | | x********4
发帖数: 405 | 3 i guess the first stage regression does that... not the reduced form...
【在 s********t 的大作中提到】
: check weak instrument?
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