One-Way Tables

# One-Way Tables

Basic, GCSE(F),

Information about Experimental Probability can be captured in a number of different ways. If there is only one piece of information being captured, such as the roll of a dice, or the colour of cars on a motorway, then the information can be captured in a One-Way table.

One-way tables can be shown either vertically or horizontally.

One-way tables do not normally show a total, although a total is required to work out the probability of an even happening.

## Examples

1. A die was rolled twenty times. The results were plotted onto a one-way table:

Throw123456
Frequency344234

Which value appeared the least often?

2. A survey of cars along a road was recorded in a notebook. The entry for the number of Red cars was obliterated by rain. If it was known that frac(1)(4) of the cars were white, and that an frac(1)(8) of the cars were red.