program11

To generate a basic box plot using ggplot2,enhanced with notches and ouliers ,and grouped by a categorical variable using an in-built data set R

STEP1:LOAD THE LIBRARY

library(ggplot2)

STEP2:load iris data set

data(iris)
head(iris)

  Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1          5.1         3.5          1.4         0.2  setosa
2          4.9         3.0          1.4         0.2  setosa
3          4.7         3.2          1.3         0.2  setosa
4          4.6         3.1          1.5         0.2  setosa
5          5.0         3.6          1.4         0.2  setosa
6          5.4         3.9          1.7         0.4  setosa

STEP3:create a boxplot with notches

ggplot(iris, aes(x = Species, y = Sepal.Length))+
  geom_boxplot(
    notch = TRUE,
    notchwidth = 0.5,
    outlier.colour = "black",
    fill = "pink" ) +
  labs(title = "basic box plot",
       x = "Species",
       y = "Sepal.Length")+
  theme_minimal()