Chapter 5 Density plots

You should use this method if the data is:

• Numeric and continuous

In this chapter you will learn how to do some simple data explorations for numerical variables using density plots.

5.1 One variable

wage_df %>% 
  ggplot(aes(x = wage)) +
  geom_density()

5.2 Two variables

Combine your numeric variable with a categorical variable:

wage_df %>% 
  ggplot(aes(x = wage, fill = education)) + 
  geom_density() 

Make some adjustments:

wage_df %>% 
  ggplot(aes(x = wage, fill = education)) +
  geom_density(alpha = 0.6) +
  scale_fill_brewer(palette = "Blues")