What is an R Pie Chart used for?
a) To display the proportion of categories as slices of a circle
b) To plot relationships between two variables
c) To show data distribution along a numeric axis
d) To compare the frequency of categories
Answer:
a) To display the proportion of categories as slices of a circle
Explanation:
An R pie chart is used to display the proportion of categories as slices of a circle. Each slice represents a category’s share of the total, making pie charts ideal for visualizing the composition of a dataset. Pie charts are particularly useful when you want to show relative sizes of parts to a whole.
# Creating a pie chart in R
slices <- c(10, 20, 30, 40)
labels <- c("A", "B", "C", "D")
pie(slices, labels = labels, col = rainbow(length(slices)), main = "Pie Chart Example")In this example, a pie chart is created with four slices representing different categories labeled A, B, C, and D. The pie() function in R is commonly used for creating pie charts, and the slices are often color-coded for better visual distinction.