Solution for QID #67274: 1)What is a "natural experiment" and why are they | StudyHelpMe

1) What is a "natural experiment" and why are they of use to economists? 2.      Your friend ran a two-stage-least squares regression to perform an instrumental variables analysis. She spent some time looking at the output of her first stage regression: what might she be looking for? Why does she need to look at the first stage regression output before interpreting her second stage output? 3.      How do you interpret log-log, log-lin, and lin-log regressions? When are these appropriate?