Probability Vocabulary

Front

Probability

Back

The odds of an event happening, is expressed as a number between 0 and 1

Front

Simple Probability

Back

The ratio of desired outcomes to the total possible number of outcomes

Front

Complement

Back

The probability of the event NOT occurring

Front

Compound Probability

Back

The probability of two or more independent events occurring together

Front

Sample Space

Back

describes all the possible outcomes of an event (list or tree diagram)

Front

Independent Probability

Back

When the outcome of one event DOES NOT impact the outcome of the second event

P(A and B)= P(A) x P(B)

Front

Dependent Probability

Back

When the outcome of one event DOES impact the outcome of another

P(A and B)= P(A) x P(B after A)

Front

Experimental Probability

Back

The ratio of the number of times an event occurs to the total number of trials

Answers the question "What happened?"

Front

Theoretical Probability

Back

The probability of an event happening based on all of the possible outcomes

Answers the question "What should happen?"