ex2_answer_120c_su08_S1-1

Ex2_answer_120c_su08 - STUDENT CONSENT FOR RELEASE OF STUDENT INFORMATION(Buckley Waiver I hereby authorize the UCSD Economics Department to return

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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 Summer 2008-S1 C o u r s e E c o n 1 2 0 C D a t e A u g u s t 2 , 2 0 0 8 Instructor Professor Yongil Jeon Student ID# Print Name Signature
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2 Answer to FINAL EXAM, ECO 120C, Summer 2008 – S1 Economics 120C Name: _________________________ August 2, 2008 (7-10pm, HSS 1330) Student ID#: ________key_______ Answer to Final Exam: Econometrics (Econ 120C) Multiple Choices 1. (3 points) Panel data is also called a. longitudinal data. b. cross-sectional data. c. time series data. d. experimental data. Answer : a 2. (3 points) The difference between an unbalanced and a balanced panel is that a. you cannot have both fixed time effects and fixed entity effects regressions. b. an unbalanced panel contains missing observations for at least one time period or one entity. c. the impact of different regressors are roughly the same for balanced but not for unbalanced panels. d. in the former you may not include drivers who have been drinking in the fatality rate/beer tax study. Answer : b 3. (3 points) T im e F i x e d E f f e c t s r e g r e s s i o n a r e u s e ful in dealing with omitted variables a. even if you only have a cross-section of data available. b. if these omitted variables are constant across entities but vary over time. c. when there are more than 100 observations. d. if these omitted variables are constant across entities but not over time. Answer : b 4. (3 points) A r e p e a t e d c r o s s - s e c t i o n a l d a t a s e t a. is also referred to as panel data. b. is a collection of cross-sectional data sets, where each cross-sectional data set corresponds to a different time period. c. samples identical entities at least twice. d. is typically used for estimating the following regression model 01 2 1 , 1, ... it it it r r it it YX W W u E EE ± ± ± ± ± ± Answer : b
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3 Answer to FINAL EXAM, ECO 120C, Summer 2008 – S1 5. (3 points). The time interval between observations can be all of the following with the exception of data collected a . d a i l y . b. by decade. c. bi-weekly. d. across firms. Answer : d 6. (3 points). The AR( p ) model a. is defined as 0 tp t p t YY u E ± ² ² . b. represents Y t as a linear function of p of its lagged values. c. can be represented as follows: 01 tt p t p t YX Y u EE ± ²² ² .
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This note was uploaded on 10/21/2010 for the course ECON 1530 taught by Professor Ohly during the Spring '10 term at Dartmouth.

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Ex2_answer_120c_su08 - STUDENT CONSENT FOR RELEASE OF STUDENT INFORMATION(Buckley Waiver I hereby authorize the UCSD Economics Department to return

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