PROGRAM 9

Objective

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

 # Load the ggplot2 package
library(ggplot2)

Step 1: Load and Explore the Dataset:

# Load the iris dataset
data(iris)

# View the first few rows of the dataset 
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 2: Create grouped histograms using facet_wrap:

# Create histograms using facet_wrap for grouped data
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()