Mgt 6203 - Study guides, Class notes & Summaries

MGT 6203 MIDTERM PART 2– SOLUTION KEY CODING QUESTIONS with ANSWERS update!!

MGT 6203 Midterm Exam: Part 1 (Theory) Actual Questions and Answers|Latest Update 100% Correct

MGT 6203 Final Exam - Part 1 (Theory) Actual Questions and Answers|Latest Update 100% Correct

MGT 6203 Graded Homework 2: Part 1 Latest Update with complete solution

MGT 6203 Graded Homework 3 : Part 1|Actual Questions and Answers|Latest Update 100% Correct

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

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...

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

MGT-6203 Graded Homework 1: Part 1|Latest Update with complete solution

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