BADM 211 EXAM 2 Questions with Correct Answers

BADM 211 EXAM 2 Questions with Correct Answers


Question 1:
Recall that for each record, we mathematically define error as = − .&,where is the actual
outcome and .& is the predicted outcome.What does a negative error for a record imply?
A. We are underestimating the outcome for that record.
B. We are overestimating the outcome for that record.
C. We are perfectly predicting the outcome for that record.
D. Mean Absolute Error (MAE) is negative
Answer:
B. We are overestimating the outcome for that record.



Question 2:
Multiple linear regression is an example of which of the following? Regression
Classification
Answer:
A



Question 3:
Which of the following is a regression problem:1. Predicting the price at which an item will be
sold2. Predicting whether an item will be soldSelect all that apply.
A. Only 1
B. Only 2
C. Both 1 and 2
D. Neither 1 nor 2
Answer:
A. Only 1



Question 4:
False
Answer:
A



Question 5:
Why do we drop a variable when dummy coding? To make the data easier to work with