Probability

Front

What is probability?

Back

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

Front

What is the probability of an event that is impossible?

Back

0

Front

What is the probability of an event that is certain?

Back

1

Front

How do you calculate the probability of a single event?

Back

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

Front

If a die is rolled, what is the probability of rolling a 3?

Back

1/6

Front

What is the probability of rolling an even number on a die?

Back

3/6 or 1/2 (the even numbers are 2, 4, and 6).

Front

In a jar with 2 pink, 6 red, and 4 blue marbles, what is the probability of picking a red marble?

Back

6/12 or 1/2.

Front

What is a tree diagram?

Back

A tree diagram is a visual representation that shows all possible outcomes of an event, branching out from a starting point.

Front

How many combinations can be made with 3 sweaters, 3 skirts, and 2 pairs of shoes?

Back

18 combinations (3 x 3 x 2 = 18).

Front

What does 'equally likely' mean in probability?

Back

It means that all outcomes have the same chance of occurring.