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# What is the relationship between probability and percent?

Feb 3, 2015

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$\to$percentage = times 100
Percentage $\to$ fraction = divide by 100

That's all there is to it.

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