Suppose the probability of rain tommorw is 80%. what are the odds of rain tommorrow?

2 Answers
Mar 1, 2018

4 in 5

Explanation:

"The odds of" refers to the method of writing a probability as
x in y.

the probability of raining tomorrow is 80%
=80/100
=4/5

Therefore, the odds of rain tomorrow is 4 to 1.

Mar 1, 2018

The odds of rain are 4:1.

Explanation:

Convert the probability percentage to a fraction:

80% -> 4/5

Any fraction will do. Now take the number on bottom and subtract the number on top:

5-4 = 1

The number on top 4 is the first number in the odds expression, and this new 1 is the second number.

"Probability = 80% " => " Odds = 4:1"

This odds expression means that, for every 4 rainy days, we expect to get 1 non-rainy day (5 days total).