Chapter 4. How to explore qualitative variables
This chapter demonstrates how to explore a categorical variable with the help of tables of counts and proportions. As in the previous chapter, graphs (pie charts, bar plots and dot charts) will play a very important role. You will also learn how to change values of a categorical variable. In addition, we will discuss how one can use Deviation of Proportions to measure dispersion of words in a corpus. This approach will be illustrated by a case study of the Basic Colour Terms in English.