管理经济学课件.docx

PAGE 64 Chapter 4: BASIC ESTIMATION TECHNIQUES ? 2016 by McGraw-Hill Education. ?This is proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. ?This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part.? Chapter 4: BASIC ESTIMATION TECHNIQUES Multiple Choice 4-1 For the equation Y = a + bX, the objective of regression analysis is to estimate the parameters a and b. estimate the variables Y and X. fit a straight line through the data scatter in such a way that the sum of the squared errors is minimized. both a and c Answer: d Difficulty: 01 Easy Topic: The Simple Linear Regression Model AACSB: Reflective Thinking Blooms: Understand Learning Objective: 04-01 4-2 In a linear regression equation of the form Y = a + bX, the slope parameter b shows ?X / ?Y. ?Y / ?X. ?Y / ?b. ?X / ?b. none of the above Answer: b Difficulty: 01 Easy Topic: The Simple Linear Regression Model AACSB: Reflective Thinking Blooms: Understand Learning Objective: 04-01 4-3 In a linear regression equation of the form Y = a + bX, the intercept parameter a shows the value of X when Y is zero. the value of Y when X is zero. the amount that Y changes when X changes by one unit. the amount that X changes when Y changes by one unit. Answer: b Difficulty: 01 Easy Topic: The Simple Linear Regression Model AACSB: Reflective Thinking Blooms: Remember Learning Objective: 04-01 4-4 In a regression equation, the ______ captures the effects of factors that might influence the dependent variable but arent used as explanatory variables. intercept slope parameter R-square random error term Answer: d Difficulty: 01 Easy Topic: The Simple Linear Regression Model AACSB: Reflective Thinking Blooms: Understand Learning Objective: 04-01 4-5 The sample regression line shows the actual (or true) relation between the dependent and independent variables. is used to estimate