IBM c2090-930 practice test

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

Referring to the exhibit, from which node is the output generated and on which data does it show
greater accuracy?

• A. Statistics, 1_Training B.Statistics, 2_Testing C.Analysis, 1_Training D.Analysis, 2_Testing

How many stages are there in the CRISP-DM process model?

• A. 4 B.6 C.8 D.10

You want to create a Filter node to keep only a subset of the variables used in model building, based
on predictor importance.
Which menu in the model nugget browser provides this functionality?

• A. File B.Preview C.View D.Generate

Which palette contains the Data Audit node?

• A. Output B.Modeling C.Graphs D.Sources

You are working on a project where the business objective is to increase sales revenue.
With which CRISP-DM process model stage would you start?

• A. Data Preparation B.Data Understanding C.Evaluation D.Business Understanding

Besides providing a new predicted value, which additional task would some modeling nuggets
perform?

• A. Provide additional information regarding the quality of the prediction. B.Filter non-target fields from being passed downstream. C.Use the scored data to update itself to increase its accuracy. D.Export the predictions to external storage or processes for further use.

A customer has a large data set with no target variables or known results and is looking for a good
approach for understanding more about groups within the data set.
Which two IBM SPSS Modeler Professional node applications represent a correct approach to
accomplish this task? (Choose two.)

• A. The customer uses a Kohonen node in an effort to group data into clusters using a self-organizing map of neurons. B.The customer uses a TwoStep node to identify the optimal set of clusters within the data. C.The customer uses a RFM Aggregate node to identify the optimal set of clusters within the data. D.The customer uses a Carma node in an effort to group data into clusters using a self-organizing map of neurons.

You have duplicate records that must be removed from a data set in IBM SPSS Modeler Professional.
The appropriate node to perform this action would be found in which palette tab?

• A. Sources B.Record Ops C.Field Ops D.Export

You have executed a model node which has generated a model nugget connected to your stream's
data source.
What will allow the stream to score data with this new nugget?

• A. Remove any partition node to allow all data to be scored. B.Add a Discriminant node to use the nugget model for scoring. C.Remove the Reclassify node to use the nugget model for scoring. D.Add an output node downstream from the nugget.