Is Horsepower of a Car Related to Its Mileage?
Posted by mislam on January 7, 2013
Motor Trend magazine collected the horsepower and mileage for 32 cars in the 1973-74 model year. To see if there is any relationship between horsepower and mileage, I construct a scatter plot of the two variables.
From this scatter plot, it is clear that the horsepower and mileage are negatively related. The mileage decreases as HP increases.
R code
png("cargraph.png")
with(mtcars, plot(hp, mpg ,pch=19, col="red"))
dev.off()