Mgt 6203 midterm Study guides, Class notes & Summaries

MGT 6203 spring 2022 midterm part 1 (QUESTIONS AND ANSWERS) - Georgia Institute Of Technology

MGT 6203 Midterm Part 1 - Questions and Answers Q1) What is the adjusted R-squared: A. 0.681 B. 0.6772 C. 0.6778 D. 0.3228 Ans: B: 1-[((1-0.681)*(506-1))/(506-6-1)] or 1-[(13625.6/499)/(42716.3/505)] From Wk1 Page 19 Slide 1

MIDTERM – SOLUTION KEY CODING QNS Q21) Please estimate a linear regression model (using the lm function) with Personal as the dependent variable and Room.Board as the independent variable. What are the model’s Rsquared and adjusted R-squared values? a) 0.00549, 0.048 b) 0.0143, 0.022 c) 0.0398, 0.0385 d) 0.0325, 0.0336 Answer: C (Week 1 Lesson 4) library("ISLR") data("College") summary(lm(College$Personal~College$Room.Board)) ## ## Call: ## lm(formula = College$Personal ~ Co...

MGT 6203 MIDTERM PART 2– SOLUTION KEY CODING QUESTIONS with ANSWERS Week 1 Use the inbuilt dataset ‘longley’ for questions 1 and 2. Q1) Fit a linear regression model with ‘Employed’ as the response variable and all other variables (except ‘Year’) as predictors. What are the significant predictors at 10% significance level? A. GNP B. GNP, Armed.Forces C. GNP, Unemployed, Population D. None of the predictors are significant at 10% significance level Solution: model1 = lm(E...

MGT 6203X MIDTERM PART 1 COVERS THE TOPICS IN WEEKS 1 TO 8 AND IS WORTH 8% OF YOUR OVERALL GRADE (THEORY) GEORGIA INSTITUTE OF TECHNOLOGY

MIDTERM – SOLUTION KEY CODING QNS Q21) Please estimate a linear regression model (using the lm function) with Personal as the dependent variable and Room.Board as the independent variable. What are the model’s Rsquared and adjusted R-squared values? a) 0.00549, 0.048 b) 0.0143, 0.022 c) 0.0398, 0.0385 d) 0.0325, 0.0336 Answer: C (Week 1 Lesson 4) library("ISLR") data("College") summary(lm(College$Personal~College$Room.Board)) ## ## Call: ## lm(formula = College$Personal ~ C...

Week 1 Use the inbuilt dataset ‘longley’ for questions 1 and 2. Q1) Fit a linear regression model with ‘Employed’ as the response variable and all other variables (except ‘Year’) as predictors. What are the significant predictors at 10% significance level? A. GNP B. GNP, Armed.Forces C. GNP, Unemployed, Population D. None of the predictors are significant at 10% significance level Solution: model1 = lm(Employed~.-Year, data = longley) summary(model1) ## ## Call: ## lm(f...

MIDTERM – SOLUTION KEY THEORY QNS *Q1) Consider a linear regression model with 2 independent variables (assume both are correlated with the response variable). If we add an interaction term between the independent variables to the model, how will the model be affected: A) The R2 will increase (or remain the same) with certainty while the adjusted R2 can increase or decrease B) Both the R2 and adjusted R2 will increase with certainty. C) The R2 will decrease (or remain the same) with cert...

MGT 6203 MIDTERM – SOLUTION KEY THEORY QUESTIONS WITH ANSWERS.*Q1) Consider a linear regression model with 2 independent variables (assume both are correlated with the response variable). If we add an interaction term between the independent variables to the model, how will the model be affected: A) The R2 will increase (or remain the same) with certainty while the adjusted R2 can increase or decrease B) Both the R2 and adjusted R2 will increase with certainty. C) The R2 will decrease (or rema...