Society of Actuaries (SOA) PA Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Society of Actuaries (SOA) PA Exam with our comprehensive quiz. Study with flashcards and multiple choice questions with explanations. Master key concepts and boost your confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which library is used to construct a decision tree in R?

ggplot2
caret
rpart
dplyr

The correct answer is: rpart

The library used to construct a decision tree in R is recognized for its specialized functions that facilitate the creation and visualization of decision trees. This package allows users to build classification and regression trees, providing a straightforward interface for fitting models to data. It includes methods for splitting nodes based on criteria like Gini impurity or mean squared error, which is essential in developing a decision-making framework in predictive modeling. Additionally, this library offers capabilities for plotting the generated trees, thereby aiding in the interpretation of the model. The other libraries mentioned serve different purposes: one is focused on data visualization, another is geared towards creating a unified interface for various modeling techniques including decision trees, and the last one specializes in data manipulation. However, their functionalities do not directly pertain to the construction of decision trees as effectively as the chosen library does.