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How do you calculate odds against something?

2 Answers

+1 vote
To find an odds ratio from a given probability, first express the probability as a fraction (we'll use 5/13). Subtract the numerator (5) from the denominator (13) : 13 - 5 = 8. The answer is the number of unfavorable outcomes. Odds can then be expressed as 5 : 8 - the ratio of favorable to unfavorable outcomes.
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Probability vs Odds



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