File Info
| Exam | SAS Statistical Business Analysis SAS9: Regression and Model |
| Number | A00-240 |
| File Name | SASInstitute.A00-240.PracticeTest.2018-08-17.36q.tqb |
| Size | 2 MB |
| Posted | Aug 17, 2018 |
| Download | SASInstitute.A00-240.PracticeTest.2018-08-17.36q.tqb |
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Demo Questions
Question 1
Refer to the lift chart:
What does the reference line at lift = 1 corresponds to?
- The predicted lift for the best 50% of validation data cases
- The predicted lift if the entire population is scored as event cases
- The predicted lift if none of the population are scored as event cases
- The predicted lift if 50% of the population are randomly scored as event cases
Correct answer: B
Question 2
Suppose training data are oversampled in the event group to make the number of events and non-events roughly equal. A logistic regression is run and the probabilities are output to a data set NEW and given the variable name PE. A decision rule considered is, "Classify data as an event if probability is greater than 0.5." Also the data set NEW contains a variable TG that indicates whether there is an event (1=Event, 0= No event).
The following SAS program was used.
What does this program calculate?
- Depth
- Sensitivity
- Specificity
- Positive predictive value
Correct answer: B
Question 3
Refer to the exhibit:
The plots represent two models, A and B, being fit to the same two data sets, training and validation.
Model A is 90.5% accurate at distinguishing blue from red on the training data and 75.5% accurate at doing the same on validation data. Model B is 83% accurate at distinguishing blue from red on the training data and 78.3% accurate at doing the same on the validation data.
Which of the two models should be selected and why?
- Model A. It is more complex with a higher accuracy than model B on training data.
- Model A. It performs better on the boundary for the training data.
- Model B. It is more complex with a higher accuracy than model A on validation data.
- Model B. It is simpler with a higher accuracy than model A on validation data.
Correct answer: D
