BUSN5000 HW 8 Part A

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11/6/23, 2 : 08 PM Assignment 8: Regression Discontinuity Page 1 of 5 https://chris-cornwell.shinyapps.io/Assignment8/#section-a-short-answer A: Short Answer RD designs Question 1: In a sharp RD design, the _____ holds automatically because In a sharp RD design, the _____ holds automatically because treatment assignment is determined solely by the _____ value treatment assignment is determined solely by the _____ value of the _____ variable. of the _____ variable. CIA, cutoff, running Correct! Question 2: Unlike in standard regression analysis, however, there is no Unlike in standard regression analysis, however, there is no _____ in a sharp RD design, because individuals with di ! erent _____ in a sharp RD design, because individuals with di ! erent values of values of have di ! erent values of the covariate by have di ! erent values of the covariate by construction. construction. overlap Correct! Question 3: In a fuzzy RD design, the _____ value of the _____ variable In a fuzzy RD design, the _____ value of the _____ variable determines the _____ of treatment. determines the _____ of treatment. cutoff, running, probability Correct! Question 4: The key identifying assumption of an RD design is that the The key identifying assumption of an RD design is that the average _____ outcomes are _____ through the cuto ! . average _____ outcomes are _____ through the cuto ! . potential, continuous Correct! D Assignment Assignment 8: Regression 8: Regression Discontinuity Discontinuity A: Short Answer (https://chris- cornwell.shinyapps.io/Assignment8/#section- a-short- answer) Part B: Empirical Analysis (https://chris- cornwell.shinyapps.io/Assignment8/#section- part-b- empirical- analysis) Submission Start Over

11/6/23, 2 : 08 PM Assignment 8: Regression Discontinuity Page 2 of 5 https://chris-cornwell.shinyapps.io/Assignment8/#section-a-short-answer Question 5: Under the assumptions of a sharp RD design, you identify an Under the assumptions of a sharp RD design, you identify an Correct! Figure 1. Stylized sharp RD design Figure 1. Stylized sharp RD design Use Figure 1 to answer the next three questions. Question 6: The black lines are _____ approximations to potential outcome The black lines are _____ approximations to potential outcome CEFs. CEFs. regression Correct! Question 7: Select the regression specification that is consistent with the Select the regression specification that is consistent with the black lines. black lines. average treatment e ! ect on the treated. ✗ average treatment e ! ect on the untreated. ✗ average treatment e ! ect measured at the cuto ! . ✓ intent to treat e ! ect. ✗ . ✗ = + + y i 0 1 x i D i

11/6/23, 2 : 08 PM Assignment 8: Regression Discontinuity Page 3 of 5 https://chris-cornwell.shinyapps.io/Assignment8/#section-a-short-answer Correct! Question 8: Under the key identifying assumption of a sharp RD design, the Under the key identifying assumption of a sharp RD design, the model in Question 7 identifies model in Question 7 identifies Correct! Continue Best Practices Question 9: The basis for an RD analysis should be apparent in a _____ The basis for an RD analysis should be apparent in a _____ scatter plot of the outcome and _____ variable. scatter plot of the outcome and _____ variable. binned, running Correct! Question 10: . ✗ = + + y i 0 D i u i . ✗ = + + y i 0 1 x i u i . ✓ = + + + y i 0 1 x i D i u i . ✗ = + + y i 1 x i D i u i ✗ = E ( - = 0) y 1 i y 0 i x i ✗ = E ( - = ) y 1 i y 0 i x i c ✗ = E ( - = - ) y 1 i y 0 i x i c c ✓ = E ( - = c ) y 1 i y 0 i x i ✗ = E ( - = ) y 1 i y 0 i x i c ✗ = E ( - = - ) y 1 i y 0 i x i c c

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11/6/23, 2 : 08 PM Assignment 8: Regression Discontinuity Page 4 of 5 https://chris-cornwell.shinyapps.io/Assignment8/#section-a-short-answer In general, the RD specification should include a low-order In general, the RD specification should include a low-order _____ in the running variable and _____ of the running variable _____ in the running variable and _____ of the running variable with the treatment indicator. with the treatment indicator. polynomial, interactions Correct! Question 11: The distribution of the running variable should show The distribution of the running variable should show Correct! Question 12: An RD analysis of baseline _____ should show no evidence of An RD analysis of baseline _____ should show no evidence of _____ among them. _____ among them. covariates, discontinuities Correct! Question 13: Including the baseline _____ in the regression model Including the baseline _____ in the regression model (should/should not) _____ a ! ect the estimated treatment (should/should not) _____ a ! ect the estimated treatment e ! ect. e ! ect. covariates, should not Correct! Continue no evidence of manipulation because it is smooth through the cuto ! . ✓ evidence of manipulation because it is normal. ✗ evidence of manipulation because there is bunching at the cuto ! . ✗ no evidence of manipulation because it is normal. ✗

11/6/23, 2 : 08 PM Assignment 8: Regression Discontinuity Page 5 of 5 https://chris-cornwell.shinyapps.io/Assignment8/#section-a-short-answer Next Topic