Mgt 6203 Study guides, Class notes & Summaries

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

MGT 6203X - MGT 6203 MID EXAM SUMMER PART1 – THEORY GEORGIA INSTITUTE OF TECHNOLOGY

Most common problems in fitting linear regression - 1. Non-linearity of the responsepredictor relationships 2. Correlation of error terms 3. Non-Constant variance of error terms 4. Outliers 5. High-leverage points 6. Collinearity How to check for linearity - 1. Check the scatterplot of Y vs. X variable. Is it linear? 2. OR residual plot vs. fitted plot (especially useful in multiple regression). We want to see no patterns in this plot

How does the skew of a distribution affect its median relative to its mean? - Left skewed -> mean < median No skew -> mean = median Right skew -> mean > median Define correlation coefficient - Correlation coefficient captures strength of linear relationships Define total deviation, explained deviation, and unexplained deviation for OLS linear regression problem. - Total deviation: difference between observation and mean Explained deviation: difference between predicted...

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

ordinary least squares minimize - sum of squared error indicator variable aka - dummy variables interaction term - An independent variable in a regression model that is the product of two explanatory variables. interaction term is used to model - how the synergies between multiple variables impact the response variable R2 will always never decrease as - you add more parameters the mean of a variable that has a right-skewed distribution is smaller than the median (T/F) - FALSE

MGT 6203X SELF ASSESSMENT 3 COVERS THE TOPICS IN WEEKS 1, 2 AND 3 AND IS WORTH 1.5% OF YOUR OVERALL GRADE GEORGIA INSTITUTE OF TECHNOLOGY

MGT 6203X Graded Homework #2 Part 1 covers the topics in Weeks 4,5,6 ,7 and is worth 4% of your overall grade Georgia Institute Of Technology

MGT 6203X GRADED HOMEWORK #1 - PART 1 COVERS THE TOPICS IN WEEKS 1, 2, 3, AND 4 AND IS WORTH 10% OF YOUR OVERALL GRADE GEORGIA INSTITUTE OF TECHNOLOGY