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We answer the above questions in two steps q2a we

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Unformatted text preview: (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Melissa Tartari (Yale) Econometrics 70 / 93 Failure of SLR.2: An Example (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Would we learn the answer to Q.2 if we were to LS-regress Y on a constant and X using our sample data? Melissa Tartari (Yale) Econometrics 70 / 93 Failure of SLR.2: An Example (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Would we learn the answer to Q.2 if we were to LS-regress Y on a constant and X using our sample data? Let bo , b1 denote the OLS estimators of such regression. Are they ββ unbiased? Under what assumptions? Melissa Tartari (Yale) Econometrics 70 / 93 Failure of SLR.2: An Example (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Would we learn the answer to Q.2 if we were to LS-regress Y on a constant and X using our sample data? Let bo , b1 denote the OLS estimators of such regression. Are they ββ unbiased? Under what assumptions? We answer the above questions in two steps: Melissa Tartari (Yale) Econometrics 70 / 93 Failure of SLR.2: An Example (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Would we learn the answer to Q.2 if we were to LS-regress Y on a constant and X using our sample data? Let bo , b1 denote the OLS estimators of such regression. Are they ββ unbiased? Under what assumptions? We answer the above questions in two steps: Q.2.a we suppose that ZCMA holds Melissa Tartari (Yale) Econometrics 70 / 93 Failure of SLR.2: An Example (Q.2) Recall Q.2: what is the e¤ect of attending a private high school on college grades, other things (namely, ability and drive) equal? Would we learn the answer to Q.2 if we were to LS-regress Y on a constant and X using our sampl...
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