program 9

Create multiple histogram using ggplot2::face_wrap() to visualize how a variable (e.g sepal length ) is distributed across different groups (e.g species) in built-in R dataset.

step1:Load the libraries

library(ggplot2)

Step 2:Load the bulit-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

Step 3:Create histogram

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()