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Real C2090-930 Questions

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IBM C2090-930 Exam Demo

You have optimized four models that do not meet your performance goals. You believe that by mergingthese models together you would achieve better performance. 
Which node would allow you to accomplish this task? 
A.Aggregate node 
B.Reclassify node 
C.Regression node 
D.Ensemble node 
Answer: B

You have a data set with numeric fields (columns) that contain null values. You want to replace each of these null values with the value of zero. 
Which node will you use to accomplish this task? 
A.Type node 
B.Filler node 
C.Filter node 
D.Binning node 
Answer: A

You need to determine whether a variable should be removed in the stepwise variable selection methods in logistic regression. 
Which two metrics are used to accomplish this task? (Choose two.) 
A.Wald Statistic 
B.KS-Statistic 
C.Likelihood Ratio (LR) Statistic 
D.Z-Statistic 
Answer: A,C

A client has a business goal of increasing units sold by 10 percent. 
Which two data mining objectives would be consistent with their business goal? (Choose two.) 
A.Create a profile of customers most likely to default on their account. 
B.Create a profile of current high value customers' purchasing patterns. 
C.Reduce marketing costs. 
D.Determine which products should be grouped together on the shopping Web site. 
Answer: B,D

You have a data source which provides many fields needed for data scoring. Some of these fields are not needed after the scoring is complete for the rest of the stream to operate. 
Which node should be used to remove these fields? 
A.Filter node 
B.Select node 
C.Sample Node 
D.Type node 
Answer: C

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