SASInstitute SAS Certified Statistical Business Analyst Using SAS 9: Regression and Modeling Credential - A00-240 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

In partitioning data for model assessment, which sampling methods are acceptable? (Choose two.)

A. Sequential random sampling with replacement B. Simple random sampling with replacement C. Stratified random sampling without replacement D. Simple random sampling without replacement

Discussion 0

Correct Answer: C,D Vote an answer

Question 2

Refer to the confusion matrix:

An analyst determines that loan defaults occur at the rate of 3% in the overall population. The above confusion matrix is from an oversampled test set (1 = default).
What is the sensitivity adjusted for the population event probability?

Discussion 0

Correct Answer:

Enter your answer in the space below. Round to three decimals (example: n.nnn).
0.617

Question 3

Given the following LOGISTIC procedure:

What is the difference between the datasets OUTFILEJ and OUTFILE_2?

A. OUTFILE_1 contains the model goodness of fit statistics while OUTFILE_2 contains the newly scored probabilities B. OUTFILE_1 contains the final parameter estimates while OUTFILE_2 contains the newly scored probabilities. C. OUTFILEJ contains the final parameter estimates and Wald Chi-Square values while OUTFILE_2 contains the newly scored probabilities. D. OUTFILE_1 contains the model goodness of fit statistics while OUTFILE_2 contains the newly scored logits.

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Correct Answer: B Vote an answer

Question 4

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. Problems that arise due to missing values B. Collinearity C. Quasi-complete separation D. Influential observations

Discussion 0

Correct Answer: C Vote an answer

Question 5

Which of the following describes a concordant pair of observations in the LOGISTIC procedure?

A. An observation with the event has a higher predicted probability than the observation without the event B. An observation with the event has an equal probability as another observation with the event. C. An observation with the event has a lower predicted probability than the observation without the event. D. An observation with the event has an equal predicted probability as the observation without the event.

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Correct Answer: A Vote an answer

Question 6

Which SAS program will best identify influential observations in a multiple regression application?

A. Option B B. Option A C. Option C D. Option D

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Correct Answer: C Vote an answer

Question 7

Which SAS program will detect collinearity in a multiple regression application?

A. Option B B. Option A C. Option C D. Option D

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Correct Answer: A Vote an answer

Question 8

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. OUTCORR=estimates B. OUTSTAT=estimates C. OUTP=estimates D. OUTPUT=estimates

Discussion 0

Correct Answer: C Vote an answer

Question 9

Consider scoring new observations in the SCORE procedure versus the SCORE statement in the LOGISTIC procedure.
Which statement is true?

A. Unlike the SCORE procedure, the SCORE statement in the LOGISTIC procedure produces both predicted probabilities and predicted logits. B. The SCORE procedure and the SCORE statement in the LOGISTIC procedure produce the same output. C. The SCORE statement in the LOGISTIC procedure returns only predicted probabilities, whereas the SCORE procedure returns only predicted logits. D. The SCORE statement in the LOGISTIC procedure returns only predicted logits, whereas the SCORE procedure returns only predicted probabilities.

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Correct Answer: C Vote an answer

Question 10

The standard form of a linear regression model is:

Which statement best summarizes the assumptions placed on the errors?

A. The errors are correlated, normally distributed with zero mean and constant variance. B. The errors are correlated, normally distributed with constant mean and zero variance. C. The errors are independent, normally distributed with zero mean and constant variance. D. The errors are independent, normally distributed with constant mean and zero variance.

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Correct Answer: C Vote an answer