Using Basic Data Analysis functions on the mtcars dataset
mtcars dataset
head(datasets::mtcars)
mpg cyl disp hp drat wt qsec vs am gear carb
Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
Which car has the highest horsepower (hp) ?
find and display the car with the highest horsepower
index <- which.max(myCars$hp) myCars[index,]
mpg cyl disp hp drat wt qsec vs am gear carb
Maserati Bora 15 8 301 335 3.54 3.57 14.6 0 1 5 8
Maserati Bora has the highest horsepower at 335
Exploring miles per gallon (mpg) of the cars
# find and display the car with the highest mpg
index<-which.max(myCars$mpg)
myCars[index,]
mpg cyl disp hp drat wt qsec vs am gear carb
Toyota Corolla 33.9 4 71.1 65 4.22 1.835 19.9 1 1 4 1
Which car has the “best” combination of mpg and hp?
bestCombo<- myCars$hp / myCars$mpg myCars[which.max(bestCombo),]
mpg cyl disp hp drat wt qsec vs am gear carb
Maserati Bora 15 8 301 335 3.54 3.57 14.6 0 1 5 8