What is the relationship between probability and percent?

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Answer 1 · 2015-02-03T13:04:56

It's a matter of converting between a fraction and a percentage .

Remember that the word 'percent' really means 'per hundred'.
(and you are in fact converting from dollars to cents and back)

So if you have a probability of $0.11$ you can rewrite this as
$0.11=11/100=11%$ (or $$0.11=11 cents$ )

And the other way around, if you have a chance-percentage of $45%$ you can rewrite this as:
$45%=45/100=0.45$ (or $45cents=$0.45$ )

The rule:
Fraction $->$ percentage = times 100
Percentage $->$ fraction = divide by 100

That's all there is to it.

One more thing:
In probabilities you never have more than $$1$ or $100%$