Georgia Institute Of Technology MGT 6203 Midterm Exam_ Part 1_ Hadi Sharifi

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Question 1 1 / 1 pts False negative is a Type II error, i.e. you incorrectly retain a false null hypothesis True False Question 2 1 / 1 pts Adding interaction terms: Decreases model complexity ... Increases model complexity Always makes the independent variable insignificant Always increases the Goodness of Fit of the model Incorrect Incorrect Question 3 0 / 1 pts In a linear regression model, you add a categorical variable “City” which takes the values of 60 different cities. This leads to: (i) Overfitting of your model (ii) Underfitting of your model (iii) Reduction in the degrees of freedom of your model (i) only (ii) only (iii) only (i) and (ii) (i) and (iii) Question 4 1 / 1 pts In the model log(Y) = b0 + b1*log(X), the elasticity of Y is the percentage change in Y (the dependent variable), when X (the independent variable) increases by one unit. False True Question 5 1 / 1 pts Odds for is the probability that the event will not happen divided by the probability that the event will happen. True False Question 6 1 / 1 pts In the election of Whoville, a poll is conducted to see whether Alex or Bob will win. Accidentally, this poll is conducted in an area which has a vast majority of Bob's supporters. Based on the result, it looks like Bob is going to win the election. However, the poll's prediction was incorrect and Alex ends up winning the election. This is an instance of selection bias – true or false? [Show More]

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