AP Statistics Probability Review

Front

What is the probability of an event?

Back

The probability of an event is a measure of the likelihood that the event will occur, expressed as a number between 0 and 1.

Front

Define independent events in probability.

Back

Independent events are two or more events where the occurrence of one event does not affect the occurrence of the other.

Front

What is the formula for calculating the probability of the union of two events?

Back

P(A or B) = P(A) + P(B) - P(A and B) where A and B are two events.

Front

What does it mean for two events to be disjoint?

Back

Two events are disjoint if they cannot occur at the same time; their intersection is empty.

Front

Explain the concept of complementary events.

Back

Complementary events are two outcomes of an event that are mutually exclusive and together cover all possible outcomes.

Front

What is the probability of rolling a sum of 7 with two dice?

Back

The probability is 6/36 or 1/6, as there are 6 combinations that result in a sum of 7.

Front

If a fair coin is flipped, what is the probability of getting heads?

Back

The probability is 1/2 or 50%.

Front

What is the difference between theoretical and experimental probability?

Back

Theoretical probability is based on the expected outcomes, while experimental probability is based on actual experiments and observations.

Front

How do you calculate the probability of selecting a specific group from a larger group?

Back

P(selecting a group) = (Number of favorable outcomes) / (Total number of outcomes).

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

The probability is 13/52 or 1/4, since there are 13 hearts in a deck of 52 cards.