AP Stats Chapter 5 Retake Test

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What are mutually exclusive events?

Back

Mutually exclusive events are events that cannot occur at the same time. For example, when flipping a coin, getting heads and tails are mutually exclusive events.

Front

What are independent events in probability?

Back

Independent events are events where the occurrence of one event does not affect the occurrence of another. For example, rolling a die and flipping a coin are independent events.

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

How do you calculate the probability of the union of two events?

Back

The probability of the union of two events A and B is calculated as P(A or B) = P(A) + P(B) - P(A and B).

Front

What does it mean if the probability of an event is less than 5%?

Back

If the probability of an event is less than 5%, it is often considered statistically significant, suggesting that the event is unlikely to occur by random chance.

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What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables, allowing for the analysis of the relationship between them.

Front

What is the complement of an event?

Back

The complement of an event A is the event that A does not occur, denoted as A'. The probability of the complement is P(A') = 1 - P(A).

Front

How do you determine if two events are independent?

Back

Two events A and B are independent if P(A and B) = P(A) * P(B). If this equality holds, the events do not influence each other.

Front

What is the formula for conditional probability?

Back

The formula for conditional probability is P(A|B) = P(A and B) / P(B), which calculates the probability of event A occurring given that event B has occurred.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected, ensuring that the sample is representative.