Pass the SAS Institute Statistical Business Analyst A00-240 Questions and answers with CertsForce

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Questions # 1:

Refer to the exhibit.

Question # 1

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

Options:

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.


Expert Solution
Questions # 2:

Given the following SAS data set TEST:

Question # 2

Which SAS program is NOT a correct way to create dummy variables?

Question # 2

Options:

A.

Option A


B.

Option B


C.

Option C


D.

Option D


Expert Solution
Questions # 3:

Refer to the exhibit:

Question # 3

An analyst examined logistic regression models for predicting whether a customer would make a purchase. The ROC curve displayed summarizes the models. Using the selected model and the analyst's decision rule, 25% of the customers who did not make a purchase are incorrectly classified as purchasers.

What can be concluded from the graph?

Options:

A.

About 25% of the customers who did make a purchase are correctly classified as making a purchase.


B.

About 50% of the customers who did make a purchase are correctly classified as making a purchase.


C.

About 85% of the customers who did make a purchase are correctly classified as making a purchase.


D.

About 95% of the customers who did make a purchase are correctly classified as making a purchase.


Expert Solution
Questions # 4:

Refer to the exhibit.

Question # 4

These graphs were created using the GLM procedure with the plots(only)=diagnostics option.

Which plot do you use to identify influential observations?

Options:

A.

Cook's D by Observation


B.

Residual by Quantile


C.

Residual by Predicted


D.

Fit - Mean and Residual Plot


Expert Solution
Questions # 5:

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.)

Question # 5

Options:

A.

Option A


B.

Option B


C.

Option C


D.

Option D


Expert Solution
Questions # 6:

Including redundant input variables in a regression model can:

Options:

A.

Stabilize parameter estimates and increase the risk of overfitting.


B.

Destabilize parameter estimates and increase the risk of overfitting.


C.

Stabilize parameter estimates and decrease the risk of overfitting.


D.

Destabilize parameter estimates and decrease the risk of overfitting.


Expert Solution
Questions # 7:

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

Options:

A.

KS


B.

SBC


C.

Max EDF


D.

Brier Score


Expert Solution
Questions # 8:

Which statistic, calculated from a validation sample, can help decide which model to use for prediction of a binary target variable?

Options:

A.

Adjusted R Square


B.

Mallow's Cp


C.

Chi Square


D.

Average Squared Error


Expert Solution
Questions # 9:

The selection criterion used in the forward selection method in the GLMSELECT procedure is:

Options:

A.

RSQ


B.

MSE


C.

R-squared


D.

AIC


Expert Solution
Questions # 10:

While building a predictive model, median imputations are performed while preparing the training data.

How should the imputations be addressed in the validation data?

Options:

A.

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


B.

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


C.

The imputed values must be recalculated using the validation data.


D.

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


Expert Solution
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