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06:03 ARE/ECN 115A: Random Samples vs Random Treatment… ARE/ECN 115A: Random Samples vs Random Treatment - SUPPLEMENT	ARE/ECN 115A: Random Samples vs Random Treatment - SUPPLEMENT bias selection sample counterfactuals treatment problem effect students sampling choice counterfactual randomization samples population campus survey level kind attention demographics From Travis Lybbert 0 likes 10 plays 0
07:55 ARE/ECN 115A: Selection Bias and RCTs SUPPLEMENT ARE/ECN 115A: Selection Bias and RCTs SUPPLEMENT	ARE/ECN 115A: Selection Bias and RCTs SUPPLEMENT credit selection treatment randomization effect impact income variable estimate differences rct axis sort variation farmer wealth things outcome thing bias From Travis Lybbert 0 likes 2 plays 0