Probability: Simple and Compound

Front

What is probability?

Back

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

Front

What does a probability of 1/2 indicate?

Back

A probability of 1/2 indicates that an event is equally likely to occur or not occur.

Front

What is the theoretical probability of an event?

Back

The theoretical probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

If a spinner is divided into 8 equal parts, what is the probability of landing on one specific part?

Back

1/8

Front

What is a compound event in probability?

Back

A compound event is an event that involves two or more simple events.

Front

What is a simple event in probability?

Back

A simple event is an event that consists of a single outcome.

Front

What does it mean if two events are independent?

Back

Two events are independent if the occurrence of one event does not affect the occurrence of the other.

Front

What does it mean if two events are dependent?

Back

Two events are dependent if the occurrence of one event affects the occurrence of the other.

Front

How do you calculate the probability of two independent events occurring together?

Back

Multiply the probabilities of each event: P(A and B) = P(A) * P(B).

Front

How do you calculate the probability of two dependent events occurring together?

Back

Multiply the probability of the first event by the conditional probability of the second event: P(A and B) = P(A) * P(B|A).