program 11

To generate basic box plot using ggplot2,enhanced with notches and outliers and grouped by a categorical variable using an in-built dataset in R.

step1:load the required package

library(ggplot2)

step2:load the built-in dataset

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:adding graph/layer

ggplot(iris,aes(x= Species,y = Sepal.Length))+
  geom_boxplot(notch = TRUE,outlier.colour = "red",outlier.shape = 16,outlier.size = 2, fill="pink")+
  labs(title = "box plot",
       x ="Sepal.Length",
       y = "Species")+
  theme_minimal()