Exercise

Ordinal variables in R

The factor() function also allows you to assign an order to the nominal variables, thus making them ordinal variables. This is done by setting the order parameter to TRUE and by assigning a vector with the desired level hierarchy to the argument levels. Since we do not want to force you to rank order your family members, we'll illustrate this with a different example.

Consider the categorical variable temperature_vector with the categories "Low" , "Medium" and "High". Here it's obvious that "Medium" stands above "Low", and that "High" stands above "Medium". Let's use R to create this rank ordering among weather observations.

Instructions

100 XP

Click "Submit Answer" to run the code and see how R constructs and prints ordinal variables.