Relative Frequency

How often something happens divided by all outcomes.

Example: Your team has won 9 games from a total of 12 games played:

All the Relative Frequencies add up to 1 (except for any rounding error).

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Example: Travel Survey

92 people were asked how they got to work:

The Relative Frequencies (to 2 decimal places) are:

0.38+0.46+0.09+0.08 = 1.01

(It would be exactly 1 if we had used perfect accuracy),

Try it for yourself: