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Q17. This question will ask you to provide a missing option. Given the following SAS program:
What option must be added to the program to obtain a data set containing Pearson statistics?
A. OUTPUT=estimates
B. OUTP=estimates
C. OUTSTAT=estimates
D. OUTCORR=estimates
Answer: B
Q18. Refer to the REG procedure output:
Click on the calculator button to display a calculator if needed.
A. 0.4115
B. 0.6994
C. 0.5884
D. 0.1372
Answer: A
Q19. What is the default method in the LOGISTIC procedure to handle observations with missing data?
A. Missing values are imputed.
B. Parameters are estimated accounting for the missing values.
C. Parameter estimates are made on all available data.
D. Only cases with variables that are fully populated are used.
Answer: D
Q20. The following LOGISTIC procedure output analyzes the relationship between a binary response and an ordinal predictor variable, wrist_size Using reference cell coding, the analyst selects Large (L) as the reference level.
What is the estimated logit for a person with large wrist size? Click the calculator button to display a calculator if needed. A. 0.0819
B. 0.5663
C. -3.7727
D. -1.0415
Answer: D
Q21. Refer to the exhibit:
Based upon the comparative ROC plot for two competing models, which is the champion model and why?
A. Candidate 1, because the area outside the curve is greater
B. Candidate 2, because the area under the curve is greater
C. Candidate 1, because it is closer to the diagonal reference curve
D. Candidate 2, because it shows less over fit than Candidate 1
Answer: B
Q22. Refer to the exhibit:
SAS output from the RSOUARE selection method, within the REG procedure, is shown. The top two models in each subset are given.
Based on the AIC statistic, which model is the champion model?
A. Age Weight RunTime RunPulse MaxPulse
B. Age Weight RunTime RunPulse RestPulse MaxPulse
C. RestPulse
D. RunTime
Answer: A
Q23. An analyst investigates Region (A, B, or C) as an input variable in a logistic regression model.
The analyst discovers that the probability of purchasing a certain item when Region = A is 1.
What problem does this illustrate?
A. Collinearity
B. Influential observations
C. Quasi-complete separation
D. Problems that arise due to missing values
Answer: C
Q24. Refer to the ROC curve:
As you move along the curve, what changes?
A. The priors in the population
B. The true negative rate in the population
C. The proportion of events in the training data
D. The probability cutoff for scoring
Answer: D