SAS Certified Statistical Business Analyst Using SAS 9: Regression and Modeling Credential (A00-240) Free Practice Test

Question 1

The SAS data set RESULT contains the following variables:
* Region (GrpA or GrpB)
* Sales (dollars per year)
Which SAS programs can be used to find the p-value for comparing GrpA sales with GrpB sales? (Choose two.)

A. Option D

B. Option C

C. Option A

D. Option B

Correct Answer: C,D

Question 2

This question will ask you to provide a segment of missing code.
The following code is used to create missing value indicator variables for input variables, fred1 to fred7.

Which segment of code would complete the task?

A. Option D

B. Option C

C. Option A

D. Option B

Correct Answer: B

Question 3

Spearman statistics in the CORR procedure are useful for screening for irrelevant variables by investigating the association between which function of the input variables?

A. Logit link (log (p/1-p))

B. Rank-ordered values of the variables

C. Concordant and discordant pairs of ranked observations

D. Weighted sum of chi-square statistics for 2x2 tables

Correct Answer: B

Question 4

An analyst generates a model using the LOGISTIC procedure. They are now interested in getting the sensitivity and specificity statistics on a validation data set for a variety of cutoff values.
Which statement and option combination will generate these statistics?

A. mode1 resp(event= '1') = gender region/outroc=roc;

B. Score data=valid1 outroc=roc;

C. Score data=valid1 out=roc;

D. mode1 resp(event"1") = gender region/ out=roc;

Correct Answer: B

Question 5

Given the following output from the LOGISTIC procedure:

Which variables, among those that are statistically significant at an alpha of 0.05, have the greatest and least relative importance on the fitted model?

A. Greatest: DOWN_AMTLeast: CASH

B. Greatest: MBALeast: DOWN_AMT

C. Greatest: DOWN_AMTLeast: HOME

D. Greatest: MBALeast: CASH

Correct Answer: A

Question 6

Refer to the REG procedure output:

An analyst has selected this model as a champion because it shows better model fit than a competing model with more predictors.
Which statistic justifies this rationale?

A. Adj R-Sq

B. R-Square

C. Error DF

D. Coeff Var

Correct Answer: A

Question 7

Refer to the lift chart:

At a depth of 0.1, Lift = 3.14. What does this mean?

A. Selecting the top 10% of the population scored by the model should result in 3.14 times greater accuracy than a random draw of 10%.

B. Selecting the top 10% of the population scored by the model should result in 3.14 times more events than a random draw of 10%.

C. Selecting the observations with a response probability of at least 10% should result in 3.14 times more events than a random draw of 10%.

D. Selecting the observations with a response probability of at least 10% should result in 3.14 times greater accuracy than a random draw of 10%.

Correct Answer: B

Question 8

While building a predictive model, median imputations are performed while preparing the training data.
How should the imputations be addressed in the validation data?

A. The imputed values must be recalculated using the validation data.

B. The imputed values must be applied directly to the validation data without recalculation.

C. The imputed values are irrelevant to the validation data, and are not used.

D. The imputed values must be recalculated using both the training and the validation data.

Correct Answer: A

Question 9

A non-contributing predictor variable (Pr > |t| =0.658) is added to an existing multiple linear regression model.
What will be the result?

A. No change in R-Square

B. A decrease in R-Square

C. An increase in R-Square

D. A decrease in Mean Square Error

Correct Answer: C

Question 10

In order to perform honest assessment on a predictive model, what is an acceptable division between training, validation, and testing data?

A. Training: 50% Validation: 0% Testing: 50%

B. Training: 0% Validation: 100% Testing: 0%

C. Training: 50% Validation: 50% Testing: 0%

D. Training: 100% Validation: 0% Testing: 0%

Correct Answer: C

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SASInstitute SAS Certified Statistical Business Analyst Using SAS 9: Regression and Modeling Credential (A00-240) Free Practice Test