Note, jc
Consider a single die......let's look at the probability of rolling a "1" .....this is given by
[Number of ways a specific outcome could occur ] / [ Number of total outcomes] = 1 / 6
But odds are different......the odds in favor of an event happening are given as:
[Number of ways a specific outcome could occur] : [ Number of all other possible outcomes]
So......rolling a "1" could happen in 1 way.......and the number of other outcomes possible is 5...we could roll a 2, 3, 4, 5, or 6, instead
So......the odds in favor of rolling a 1 = 1 : 5 = 1 to 5
So...in our problem......the odds in favor of having a heart attack =
[30 people have a heart attack ] : [ 970 people don't] = 30 : 970
Does that make sense ???
[ People often use the terms "probability' and "odds" interchangeably. They are not the same, technically.....!!! ]
