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Exercise

Putting a rug down

The plot we just made looks pretty good, but we can see a small hint of bi-modality between the hours of 10 and 15. Given we just are looking the blob of a density estimate it's hard to know how confident we are in that shape.

Let's alleviate this by doing a couple things.

First, lower the alpha on the density plot so we can more accurately locate these peaks using the background grid.

Next, add a rug-plot beneath the density plot using geom_rug(). To show any overlap that may occur in the rug plot set its alpha to 0.5.

The data frame you made in the last exercise: truck_speeding has already been loaded for you.

Instructions

100 XP
  • Set alpha of density plot to 0.7.
  • Add geom_rug() to the plot.
  • Set alpha of rug plot to 0.5.