A Carroll diagram is a chart used to sort and display items by attributes of two categories (blue/not blue, true/not true, etc.).

The given numbers from 1 to 10 have the attribute of being odd or not odd (even), which allow them to be sorted into two groups.

The given shapes can be sorted by number of sides (odd/not odd) as well as by colour (blue/not blue).

The given shapes can be sorted by number of sides (more than four/not more than four sides), by odd number of sides or even number of sides, and by colour (blue/not blue).