Free SASInstitute A00-240 Exam Dumps Questions & Answers

What is a benefit to performing data cleansing (imputation, transformations, etc.) on data after partitioning the data for honest assessment as opposed to performing the data cleansing prior to partitioning the data?

• A.It allows for the determination of the effectiveness of the cleansing method.
• B.It is computationally easier and requires less time.
• C.It omits the training (and test) data sets from the benefits of the cleansing methods.
• D.It makes inference on the model possible.

Which of the following describes a concordant pair of observations in the LOGISTIC procedure?

• A.An observation with the event has an equal predicted probability as the observation without the event.
• B.An observation with the event has a higher predicted probability than the observation without the event
• C.An observation with the event has an equal probability as another observation with the event.
• D.An observation with the event has a lower predicted probability than the observation without the event.

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.Quasi-complete separation
• C.Problems that arise due to missing values
• D.Influential observations

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

• A.Simple random sampling without replacement
• B.Sequential random sampling with replacement
• C.Simple random sampling with replacement
• D.Stratified random sampling without replacement

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 C
• B.Option D
• C.Option B
• D.Option A