SASInstitute Statistical Business Analyst A00-240 Questions & Answers

• Question 91:

  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. Score data=valid1 out=roc;

  B. Score data=valid1 outroc=roc;

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

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

  Correct Answer: B

• Question 92:

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

  A. Simple random sampling without replacement

  B. Simple random sampling with replacement

  C. Stratified random sampling without replacement

  D. Sequential random sampling with replacement

  Correct Answer: AC

• Question 93:

  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

  Correct Answer: D

• Question 94:

  When mean imputation is performed on data after the data is partitioned for honest assessment, what is the most appropriate method for handling the mean imputation?

  A. The sample means from the validation data set are applied to the training and test data sets.

  B. The sample means from the training data set are applied to the validation and test data sets.

  C. The sample means from the test data set are applied to the training and validation data sets.

  D. The sample means from each partition of the data are applied to their own partition.

  Correct Answer: B

• Question 95:

  FILL BLANK

  A linear model has the following characteristics:

  1.

  A dependent variable (y)

  2.

  One continuous variable (x1)

  3.

  One categorical (с1 with 3 levels) predictor variable and an interaction term (с1 by x1)

  How many parameters, including the intercept, will be estimated for this model?

  Enter your numeric answer in the space below.

  Correct Answer: 7

  Section: (none)

• Question 96:

  FILL BLANK

  Refer to the REG procedure output:

  

  How many observations are used in the analysis? Enter your numeric answer in the space below.

  Correct Answer: 100 Section: (none)

• Question 97:

  FILL BLANK

  Refer to the REG procedure output:

  

  Calculate the coefficient of determination, R-Square.

  Enter your numeric answer in the space below. Round to 4 decimal places (example: n.nnnn).

  Correct Answer: 0.5671

  Section: (none)

• Question 98:

  FILL BLANK

  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?

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

  Correct Answer: 0.617

  Section: (none)

• Question 99:

  DRAG DROP

  Drag the adjustment formulas for oversamping from the left and place them into the correct location in the confusion matrix shown on the right.

  Select and Place:

  Correct Answer:

  

  Section: (none)