SOL 4.13 Probability Review

Front

What is probability?

Back

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

Front

What does it mean if an event has a probability of 0?

Back

It means that the event cannot happen at all.

Front

What does it mean if an event has a probability of 1?

Back

It means that the event is certain to happen.

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 has 3 red marbles and 2 blue marbles, what is the probability of picking a red marble?

Back

Probability = 3/(3+2) = 3/5.

Front

What is the probability of rolling a 7 on a standard number cube (1-6)?

Back

The probability is 0, because a 7 is not a possible outcome.

Front

In a spinner with 4 sections (1 red, 1 blue, 2 green), what is the probability of landing on green?

Back

Probability = 2/4 = 1/2.

Front

What is the probability of an event that is certain to not happen?

Back

The probability is 0.

Front

If there are 10 total marbles (4 red, 3 blue, 3 green), what is the probability of picking a blue marble?

Back

Probability = 3/10.

Front

What is the probability of spinning a color that is NOT red in a spinner with 2 red, 3 blue, and 5 green sections?

Back

Probability = (3+5)/10 = 8/10 = 4/5.