Online Access Free A00-255 Practice Test

Which of the following solves problems for you when you impute missing values?
Response:

• A.When you impute a synthetic value, it replaces missing values with 1 or 0.
• B.When you impute a synthetic value, it eliminates the incomplete case problem.
• C.When you impute a synthetic value, each missing value becomes an input to the model.
• D.When you impute a synthetic value, predictive information is retained.

Assume in a data mining project that the task is to predict rankings of a target variable as accurately as possible. Which of the following should be used to judge prediction models?
Response:

• A.Gini coefficient
• B.KS statistic
• C.average squared error
• D.misclassification

Which statement describes the Decision Tree Split Search mechanism for categorical inputs?
Select one:
Response:

• A.All levels are weighted and the weights are used for testing.
• B.A clustering mechanism eliminates observations in outlier clusters as potential split points as a first step. Then, for the remaining observations, the average target value is calculated for each level, and then passed on for testing if it is the optimal split point.
• C.The levels that have target rate of 0 or 100% are re-binned first, then weighted and the weights are used for testing.
• D.The average target value is calculated for each level, and then passed on for testing if it is the optimal split point.

Open the diagram labeled Practice A within the project labeled Practice A. Perform the following in SAS Enterprise Miner:

1. Set the Clustering method to Average.
2. Run the Cluster node.
What is the Cubic Clustering Criterion statistic for this clustering?
Response:

• A.14.69
• B.67409.93
• C.5.00
• D.5862.76

Which method of input selection for regression analysis evaluates the statistical significance of all included inputs after each input is added?
Select one:
Response:

• A.Backward
• B.Simple
• C.Forward
• D.Stepwise