Brittney and Michael are back with five people they want to tell you about for their involvement in helping instrumental variables become what it is today. The first day we got Philip and Sewell Wright, a father and son team who using some weird math together figured out instrumental variables, maybe for the very first time. But today we get none other than Wald estimator man himself, Abraham Wald! This is better than the 12 days of Christmas! Tune in to see who’s next!
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