Categorical and Numerical Variables
David M. Levine and David F. Stephan
In an information-overloaded world, you need to present information effectively. You can present categorical and numerical data efficiently using charts and tables. Reading this Element can help you learn to select and develop charts and tables for each type of data.
You present a categorical variable by first sorting variable values according to the categories of the variable. Then you place the count, amount, or percentage (part of the whole) of each category into a summary table or into one of several ...