Probability 1

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will 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 a single event?

Back

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

Front

What is the probability of spinning a 7 on a spinner with 4 equal sections numbered 1 to 4?

Back

0% (impossible event)

Front

If a die has 6 sides, what is the probability of rolling a 4?

Back

1/6

Front

What is the probability of flipping a coin and getting heads?

Back

50% (or 1/2) because there are 2 equally likely outcomes.

Front

In a group of 30 people, if 3 have gray hair, what is the probability of selecting a person with gray hair?

Back

1/11

Front

What does 'equally likely' mean in probability?

Back

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

Front

What is the likelihood of spinning an 8 on a spinner with numbers 1 to 8?

Back

12.5% (or 1/8) because there are 8 equally likely outcomes.