POS 3713 Understanding Political Science Research Unit 4 Exam Questions with Solutions

Understanding Political Science Research (POS 3713‐01, Fall 2017, HCB 113) Prof. Jens Großer Unit exam #4 12/07/2017 This is the fourth out of four multiple choice tests (unit exams) that count for your final grade. There are 25 questions with four possible answers each. In all questions, only one of the four answers is correct. You will receive 1 point for each correct answer, and 0 points for each incorrect answer. Hence, the maximum possible points in this test are 25 points. Please read the questions and possible answers carefully before you make your choices! Also, don’t forget to write down and “bubble” your name on the answer sheet! On Chapter 8: The following 6 questions all refer to the population regression model and/or the sample regression model from a bivariate regression model where the population regression model is: Yi X i ui and the sample regression model is: Yi ˆ ˆX i uˆi 1. Which of the following statements are accurate about the population regression model? (a) is the stochastic component of . (b) ˆ ˆX i is the systematic component of . (c) Both (a) and (b) are correct. (d) Neither (a) nor (b) are correct. 2. Which of the following statements are accurate? (a) uˆi is an estimate of ui . (b) is assumed to be measured without error. (c) Both (a) and (b) are correct. (d) Neither (a) nor (b) are correct. 3. Which of the following statements are accurate? (a) E(ui )  0. (b) E(ui2)  0. (c) Both (a) and (b) are correct. (d) Neither (a) nor (b) are correct.