Simple Probability Review

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0 (or 0%)

Front

How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

Front

If a bag contains 5 quarters, 2 dimes, and 4 pennies, what is the probability of picking a quarter?

Back

5/11

Front

In a bag with 5 green, 6 yellow, 8 blue, and 7 brown M&Ms, what is the probability of picking a blue M&M?

Back

8/26

Front

What is the probability of drawing a red 2 or a black 7 from a standard deck of cards?

Back

4/52

Front

If you spin a spinner that is divided into 5 equal parts, what is the probability of landing on red?

Back

1/5

Front

What is the range of probability values?

Back

Probability values range from 0 to 1.

Front

What does it mean if the probability of an event is 0.5?

Back

It means the event is equally likely to occur or not occur.