program 9

9.Create a multiple histograms using ggplot2::facet_wrap() to visualize how a variable (e.g.,Sepal.Length) is distributed across different groups (e.g.,Species ) in built-in R data set.

step1:Load and explore the dataset

library(ggplot2)

step2:load the 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:create histograms using factor_wrap

ggplot(iris,aes(x=Sepal.Length))+
  geom_histogram(binwidth=0.3,fill="skyblue",color="black")+
  facet_wrap(~ Species)+
  labs(title="Distribution of sepal length by species",
       x="Sepal Length(cm)",
       y="Frequency")+
  theme_minimal()