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Data-Centric Statistical Inference Using R and Tidyverse

Scatterplots

Explore how to build scatterplots using the ggplot2 package in R's Tidyverse framework. Understand the components of the grammar of graphics, filter datasets for focused analysis, and interpret the relationships between numerical variables visually.

We'll cover the following...

Needed packages

Let’s load all the packages needed for the upcoming programs:

library(nycflights13) 
library(ggplot2) 
library(dplyr)
Load packages

Five named graphs: The 5NG

In order to keep things simple in this course, we’ll only focus on five different types of graphics, each with a common given name. We term these the five named graphs, or in abbreviated form, the 5NG:

  1. Scatterplots

  2. Line graphs

  3. Boxplots

  4. Histograms

  5. Barplots

Overview of scatterplots

The simplest of the 5NG are scatterplots, also called bivariate plots. They allow us to visualize the relationship between two numerical variables. While we might already be familiar with scatterplots, let’s view them through the lens of the grammar of graphics. Specifically, we’ll visualize the relationship between the following two numerical variables in ...