DELL D-DS-FN-23 Practice Test - Questions Answers, Page 5

Refer to Exhibit.

Refer to the exhibit.

To predict whether or not a customer will renew their annual property insurance policy, an insurance company built and operationalized a nave Bayes classification model. In the model, there are two class labels, renewal and non-renewal, that are assigned to each customer based on their attributes.

A subset of the key attributes, their values, and corresponding conditional probabilities are provided in the exhibit.

A customer has the following attributes:

Age is greater than 65 years

Owns their own home

Renewal month is August

If 20% of customers do not renew the police every year, what is the score for a renewal in the nave Bayesian model for the customer described above?

What are good reasons to develop a nave Bayes classifier model?

Which SQL set operator returns rows that exist in the first SELECT statement answer set but not in the second SELECT statement?

What is a benefit of Spark in-memory data processing as opposed to using MapReduce?

When building a K-means clustering model, you notice that the clusters did not segment on variables that you expected. What should you do?

In time series analysis, what statement describes a MA(q) process?

After running a density plot you realize that the data has a long tail to the right. What can you do to make the dataset more normally distributed?

Which R function plots a distribution of a single variable along two different axes?

What action occurs during feature selection in the model building phase of the data analytics lifecycle?