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

The probability of an event that is certain to happen is 1.

Front

What is the probability of an event that is impossible?

Back

The probability of an event that is impossible is 0.

Front

How do you calculate the probability of a single event?

Back

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

Front

What is a dependent event?

Back

Dependent events are events where the outcome of one event affects the outcome of another.

Front

What is an independent event?

Back

Independent events are events where the outcome of one event does not affect the outcome of another.

Front

If you flip a coin, what is the probability of getting heads?

Back

P(heads) = 1/2.

Front

If you roll a die, what is the probability of rolling a number greater than 4?

Back

P(greater than 4) = 1/3 (only 5 and 6 are greater than 4).

Front

What is the probability of drawing a blue marble from a bag containing 2 blue, 3 black, and 5 red marbles?

Back

P(blue) = 2/10 = 1/5.

Front

What is the probability of two independent events both occurring?

Back

P(A and B) = P(A) * P(B).