The dataset to be analyzed includes all tires manufactured by the Korean tire giant Hankook.There are 6 variables: Tire Line, Construction, Size, Traction Rating, Temp Rating and Wear Rating.This assignment will only be analyzing the variable Traction Rating.Traction ratings are an indication of a tire's ability to stop on wet pavement.A higher rated tire should allow a car to stop on wet roads in a shorter distance than a tire with a lower rating.Traction is rated from highest to lowest as "AA", "A", "B", and "C".

1) What are the experimental units in this dataset?

2) What type of data is the variable Traction Rating?(i.e. is it Qualitative-Nominal, Quantitative-Discrete, etc.).