Hi@akhtar,

We can draw a boxplot with a notch to find out how the medians of different data groups. The below script will create a boxplot graph with the notch for each of the data groups.

png(file = "boxplot_with_notch.png"
boxplot(mpg ~ cyl, data = mtcars,
xlab = "Number of Cylinders",
ylab = "Miles Per Gallon",
main = "Mileage Data",
notch = TRUE,
varwidth = TRUE,
col = c("green","yellow","purple"),
names = c("High","Medium","Low")