(0:00-0:55) Overview and Definition of Category/Class
(0:56-2:04) Introduction to the Data Set and Subjectivity in Category Assignment
(2:05-3:42) Bar Graphs and Pie Charts Showing Subjectivity
Source: Charts, Tables, Graphs by Katherine Williams
The ways we choose to separate the data by differentiating characteristics. Too many or too few categories can be problematic.