PS03: Data Wrangling
Overview
Practice the core dplyr verbs — filter(), summarize(), group_by(), mutate(), arrange(), and select() — using the nycflights13 dataset.
Read Chapter 3 of ModernDive before attempting this problem set.
Download
Download the problem set template, open it in RStudio, and complete the exercises directly in the document.
Setup
Run this at the top of your document to install and load the required packages:
if (!require(pacman)) install.packages("pacman")
pacman::p_load(tidyverse, nycflights13)Exercises
PS03a: filter()
Subset rows based on conditions.
PS03b: summarize() and group_by()
Compute summary statistics by group.
PS03c: mutate()
Create new variables from existing ones.
PS03d: arrange() and select()
Sort rows and choose columns.
When you are done, render to HTML and submit on Moodle. Name your file PS03_yourname.html.