Probability
What is the probability of rolling a 3 using a six-sided die?
1/6 or 17/100 or 17%
What does probability mean?
Probability is the ratio of the times an event is likely to occur divided by the total possible events.
times an event is likely to occur/ total possible events
number of ways it can happen/ total number of outcomes
What is relative frequency?
times it happened/ times it was tried
If you go to school Monday through Friday and you know the cafeteria is going to serve pizza two days that week, what is the probability that pizza will be served on any given day?
It would be 2/5, because there are two desired outcomes (pizza!) and five possible outcomes (days of the school week).