Page 65 - Applied Statistics with R

4.2. PLOTTING 65

just used with a boxplot. (The function plot() can also be used more generally;
see the documentation for details.)

plot(hwy ~ displ, data = mpg)

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hwy 30
25

20
15

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displ

plot(hwy ~ displ, data = mpg,
xlab = "Engine Displacement (in Liters)",
ylab = "Miles Per Gallon (Highway)",
main = "MPG (Highway) vs Engine Displacement",
pch = 20,
cex = 2,
col = "dodgerblue")