A00-240問題集、SASInstitute実際の試験問題

質問 1

An analyst knows that the categorical predictor, zip_code, is an important predictor of a binary target.
However, zip_code has too many levels to be a feasible predictor in a model. The analyst uses PROC CLUSTER to implement Greenacre's method to reduce the number of categorical levels.
What is the correct application of Greenacre's method in this situation?

A. Clustering the levels using the number of cases in each zip_code as input.

B. Clustering the levels using the target proportion for each zip_code as input.

C. Clustering the levels using dummy coded zip_code levels as inputs.

D. Clustering the levels using the zip_code values as input.

正解: B

質問 2

Refer to the exhibit.

Based on the control plot, which conclusion is justified regarding the means of the response?

A. Only XL and 2XL are not significantly different from each other.

B. 2XL is significantly different from all other groups.

C. No groups are significantly different from each other.

D. All groups are significantly different from each other.

正解: A

質問 3

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 applied directly to the validation data without recalculation.

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

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

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

正解: B

質問 4

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: 50% Validation: 50% Testing: 0%

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

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

正解: B

質問 5

A linear model has the following characteristics:
* A dependent variable (y)
* One continuous variable (x1)
* One categorical (1 with 3 levels) predictor variable and an interaction term (1 by x1) How many parameters, including the intercept, will be estimated for this model?

正解:

Enter your numeric answer in the space below.
7

質問 6

Refer to the following odds ratio table:

What is a correct interpretation of the estimate?

A. The probability of the event is 1.142 greater for each one thousand dollar increase in salary.

B. The probability of the event is 1.142 greater for each one dollar increase in salary.

C. The odds of the event are 1.142 greater for each one thousand dollar increase in salary.

D. The odds of the event are 1.142 greater for each one dollar increase in salary.

正解: C

質問 7

Refer to the REG procedure output:

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

正解:

100

質問 8

Which statistic is based on the maximum vertical distance between the primary event EDF and the secondary event EDF?

A. KS

B. Max EDF

C. Brier Score

D. SBC

正解: A

質問 9

Select the equivalent LOGISTIC procedure model statements. (Choose two.)

A. Mode1 Purchase * Gender|Age|Region @1;

B. Mode1 Purchase * Gender Age Region;

C. Mode1 Purchase * Gender | Age | Region;

D. Mode1 Purchase * Gender|Age|Region @2;

正解: A,B

質問 10

Refer to the REG procedure output:

The Intercept estimate is interpreted as:

A. The predicted value of the response when all predictors = 0.

B. The predicted value of the response when all predictors are at their minimum values.

C. The predicted value of the response when all the predictors are at their current values.

D. The predicted value of the response when all predictors are at their means.

正解: A

SASInstitute SAS Certified Statistical Business Analyst Using SAS 9: Regression and Modeling Credential - A00-240 模擬練習