We have used the mtcars dataset, cleaned it up to create mtcarsClean and demonstrated the relationship between gas mileage and weight across different cylinder.

Below is what our data look like.

head(mtcarsClean, n = 3)

##                mpg        cyl disp  hp drat    wt  qsec       vs gear carb
## Mazda RX4     21.0 6 Cylinder  160 110 3.90 2.620 16.46 s-shaped    4    4
## Mazda RX4 Wag 21.0 6 Cylinder  160 110 3.90 2.875 17.02 s-shaped    4    4
## Datsun 710    22.8 4 Cylinder  108  93 3.85 2.320 18.61 v-shaped    4    1
##               transmission
## Mazda RX4           manual
## Mazda RX4 Wag       manual
## Datsun 710          manual