Hermann Math 2 Unit 8 Flashcard

Front

What is a relative frequency table?

Back

A way of organizing the frequencies from two categorical variables as percentages of the whole group or of a category in order to investigate the association between them.

Front

What are dependent events in probability?

Back

Dependent events are two events from the same experiment for which the probability of one event depends on whether the other event happens.

Front

What does the term 'union' refer to in probability?

Back

The set of outcomes that are in either event A or event B.

Front

What is the Addition Rule in probability?

Back

Given events A and B, the probability of either A or B is given by P(A U B) = P(A) + P(B) - P(A ⋂ B).

Front

How is relative frequency calculated?

Back

Relative frequency is calculated as (the number of times an event occurs) / (the total number of events that occurred).

Front

What is the difference between independent and dependent events?

Back

Independent events are events where the occurrence of one does not affect the probability of the other, while dependent events do affect each other's probabilities.

Front

What is a categorical variable?

Back

A categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group.

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

What does P(A ⋂ B) represent?

Back

P(A ⋂ B) represents the probability that both events A and B occur.

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.