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NEW QUESTION 1
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
NEW QUESTION 2
This question will ask you to provide a missing option.
Complete the following syntax to test the homogeneity of variance assumption in the GLM procedure:
Means Region / <insert option here> =levene;
- A. test
- B. adjust
- C. var
- D. hovtest
Answer: D
NEW QUESTION 3
An analyst has a sufficient volume of data to perform a 3-way partition of the data into training, validation, and test sets to perform honest assessment during the model building process.
What is the purpose of the test data set?
- A. To provide a unbiased measure of assessment for the final model.
- B. To compare models and select and fine-tune the final model.
- C. To reduce total sample size to make computations more efficient.
- D. To build the predictive models.
Answer: A
NEW QUESTION 4
A linear model has the following characteristics:
✑ A dependent variable (y)
✑ Three continuous predictor variables (x1-x3)
✑ One categorical predictor variable (c1with 3 levels)
Which SAS program fits this model?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: D
NEW QUESTION 5
Refer to the exhibit.
Based on the control plot, which conclusion is justified regarding the means of the response?
- A. All groups are significantly different from each other.
- B. 2XL is significantly different from all other groups.
- C. Only XL and 2XL are not significantly different from each other.
- D. No groups are significantly different from each other.
Answer: C
NEW QUESTION 6
The total modeling data has been split into training, validation, and test data. What is the best data to use for model assessment?
- A. Training data
- B. Total data
- C. Test data
- D. Validation data
Answer: D
NEW QUESTION 7
Which SAS program will correctly use backward elimination selection criterion within the REG procedure?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: B
NEW QUESTION 8
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 constant mean and zero variance.
- B. The errors are correlated, normally distributed with zero mean and constant variance.
- C. The errors are independent, normally distributed with constant mean and zero variance.
- D. The errors are independent, normally distributed with zero mean and constant variance.
Answer: D
NEW QUESTION 9
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
NEW QUESTION 10
An analyst compares the mean salaries of men and women working at a company.
The SAS data set SALARY contains variables:
✑ Gender (M or F)
✑ Pay (dollars per year)
Which SAS programs can be used to find the p-value for comparing men's salaries with women's salaries? (Choose two.)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: AB
NEW QUESTION 11
Given the following SAS data set TEST:
Which SAS program is NOT a correct way to create dummy variables?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: D
NEW QUESTION 12
The question will ask you to provide a missing statement. Given the following SAS program:
Which SAS statement will complete the program to correctly score the data set NEW_DATA?
- A. Scoredata data=MYDIR.NEW_DATA out=scores;
- B. Scoredata data=MYDIR.NEW_DATA output=scores;
- C. Scoredata=HYDIR.NEU_DATA output=scores;
- D. Scoredata=MYDIR,NEW DATA out=scores;
Answer: D
NEW QUESTION 13
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 more events than a random draw of 10%.
- B. Selecting the observations with a response probability of at least 10% should result in3.14 times more events than a random draw of 10%.
- C. Selecting the top 10% of the population scored by the model should result in 3.14 timesgreater accuracy than a random draw of 10%.
- D. Selecting the observations with a response probability of atleast 10% should result in 3.14times greater accuracy than a random draw of 10%.
Answer: A
NEW QUESTION 14
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. R-Square
- B. Coeff Var
- C. Adj R-Sq
- D. Error DF
Answer: C
NEW QUESTION 15
Refer to the REG procedure output:
The Intercept estimate is interpreted as:
- A. The predicted value of the response when all the predictors are at their current values.
- B. The predicted value of the response when all predictors are at their means.
- C. The predicted value of the response when all predictors = 0.
- D. The predicted value of the response when all predictors are at their minimum values.
Answer: C
NEW QUESTION 16
A predictive model uses a data set that has several variables with missing values. What two problems can arise with this model? (Choose two.)
- A. The model will likely be overfit.
- B. There will be a high rate of collinearity among input variables.
- C. Complete case analysis means that fewer observations will be used in the model building process.
- D. New cases with missing values on input variables cannot be scored without extra data processing.
Answer: CD
NEW QUESTION 17
A confusion matrix is created for data that were oversampled due to a rare target. What values are not affected by this oversampling?
- A. Sensitivity and PV+
- B. Specificity and PV-
- C. PV+ and PV-
- D. Sensitivity and Specificity
Answer: D
NEW QUESTION 18
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
- A. 0.5663
- B. -3.7727
- C. -1.0415
Answer:
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