ex3_answer_120c_w09-1

ex3_answer_120c_w09-1 - STUDENT CONSENT FOR RELEASE OF...

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STUDENT CONSENT FOR RELEASE OF STUDENT INFORMATION (Buckley Waiver) I hereby authorize the UCSD Economics Department to return my graded final examination/research paper by placing it in a location accessible to all students in the course. I understand that the return of my examination/research paper as described above may result in disclosure of personally identifiable information, that is not public information as defined in UCSD PPM 160-2, and I hereby consent to the disclosure of such information. Quarter Winter 2009 Course Econ 120C D a t e M a r c h 1 6 , 2 0 0 9 Instructor Professor Yongil Jeon Student ID# Print Name Signature
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2 Answer to FINAL EXAM, ECO 120C, Winter 2009 Economics 120C Name: _________________________ Professor Yongil Jeon March 16, 2009 (7-10pm) Student ID#: ________key_______ Answer to Final Exam: Econometrics (Econ 120C) Multiple Choices 1) (5 points) In time series, the definition of causal effects a. says that one variable helps predict another variable. b. does not make much sense since there are not multiple subjects. c. assumes that the same subject is being given different treatments at different points in time. d. requires panel data. Answer : c 2) (5 points) The distributed lag model is given by a. 01 2 1 tt t t YX Y u E EE ± ² ² ² . b. 12 2 ... t r t r t YY Y Y u ±± ± ² ² ² ² ² . c. 2 13 2 1 ... t t r t r t Yu u u u e ²² ² ² ² ² ² ² ² ² . d. 2 132 1 ... t t r t r t X X X u ² ± ² ² ² ² ² ² . Answer : d 3) (5 points) The concept of exogeneity is important because a. it clarifies whether or not the variable is determined inside or outside your model. b. maximum likelihood estimation is no longer valid. c. under strict exogeneity, OLS may not be efficient as an estimator of dynamic causal effects. d. endogenous variables are not stationary, but exogenous variables are. Answer : c 4) (5 points) The Cochrane-Orcutt method is a. a special case of GLS estimation.
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ex3_answer_120c_w09-1 - STUDENT CONSENT FOR RELEASE OF...

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