Exercise

Change the Selection variable

The last step in converting our data to long format is changing the Selection column where the choice is stored. In the wide format data, the choice is stored as an integer indicating which alternative was chosen. In long format it should be a logical or 0-1 variable indicating which alternative was chosen.

Instructions

100 XP

Use head() to look at the Selection variable where the choice is contained. Notice that Selection contains an integer for the number of the chosen alternative.
Assign chocolate$Alt == chocolate$Selection to chocolate$Selection.
Use head() to see how the Selection variable has been transformed.