program9

Create multiple histograms using ggplot2::facet_wrap() to visualize how a variable is distributed across different groups in a built-in R data set.

Step 1: Load the necessary library

library(ggplot2)

Step 2: Load the 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

Step 3: Create histogram of sepal length

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()