D-DS-FN-23 Practice Questions

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

What are three built-in data types in the R programming language?

Consider this SQL statement: SELECT product, avg(prod_cost) FROM product_detail GROUP BY product. The GROUP BY clause implies what type of function?

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

MapReduce is designed to process data in which way?

What are categorized as cluster and workflow management tools for Hadoop?

What is a business driver for Big Data analytics adoption?

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 naïve 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 naïve Bayesian model for the customer described above?

In which programming language is Hadoop written?