In linear regression modeling, which action can be taken to improve the linearity of the relationship between the dependent and independent variables?

A. Apply a transformation to a variable

B. Use a different statistical package

C. Calculate the R-Squared value

D. Change the units of measurement on the independent variable

You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions. You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results. What is your next step?

A. Report that the results are insignificant, and reevaluate the original business question.

B. Run all the models again against a larger sample, leveraging more historical data.

C. Move forward on the model with the highest significance scores relative to the others.

D. Modify samples used by the models and iterate until a significant result occurs.

You submit a MapReduce job to a Hadoop cluster. However, you notice that although the job was

successfully submitted, it is not completing.

What should be done to identify the issue?

A. Ensure TaskTracker is running

B. Ensure JobTracker is running

C. Ensure NameNode is running

D. Ensure DataNode is running

When is a Na飗e Bayesian Classifier model for classification preferred versus a Logistic Regression model?

A. When using several categorical input variables with over 1000 possible values each

B. When an estimate of the probability of an outcome is needed, not just which class it is in

C. When all input variables are numerical

D. When some of the input variables might be correlated

Refer to the exhibit.

The exhibit shows four graphs labeled as Fig A thorough Fig D. Which figure represents the entropy function relative to a Boolean classification and is represented by the formula shown in Exhibit?

A. Fig-A

B. Fig-B

C. Fig-C

D. Fig-D