RailTrail sample data

The RailTrail data frame from the mosaic package is loaded in your workspace. RailTrail contains data collected by the Pioneer Valley Planning Commission on the usage of a local rail-trail. For each of 90 days, they recorded the rail-trail volume (number of users) and whether it was a weekday (TRUE if yes and FALSE otherwise). You will explore the trends in weekday vs weekend volume below.

This exercise is part of the course

Bayesian Modeling with RJAGS

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Exercise instructions

Confirm that weekday is recorded as a factor variable.
Construct density plots of weekday volume and weekend volume on the same frame.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Confirm that weekday is a factor variable
class(___)

# Construct a density plot of volume by weekday
ggplot(___, aes(x = ___, fill = ___)) + 
    ___(alpha = 0.5)

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