Tools for visualizing probabilities are based on a betting scenario where the assessor should determine whether they would prefer to bet on the event in question or on the shaded section of the wheel, bar or sample. The shaded section should be adjusted until the assessor is indifferent to the two bets (that is, the event has the same probability of occuring as the shaded section).
The wheel, bar and sample can be manipulated via the mouse and the keyboard. Clicking and dragging the mouse across the tools will increase or decrease the shaded section, as will the arrows on the keyboard. To display the probabilities double click the tool.