Final Exam Review Questions

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 (impossible) and 1 (certain).

Front

How do you calculate the probability of an event occurring?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).

Front

What does an R^2 value indicate in statistics?

Back

An R^2 value indicates the proportion of variance in the dependent variable that can be explained by the independent variable(s) in a regression model.

Front

What does a high R^2 value (close to 1) signify?

Back

A high R^2 value signifies that a large proportion of the variance in the dependent variable is explained by the independent variable(s).

Front

What is a two-way table?

Back

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

Front

How do you find the probability of selecting an item that does not meet a certain condition?

Back

Probability of not meeting a condition = 1 - Probability of meeting the condition.

Front

What is the formula for calculating the probability of either event A or event B occurring?

Back

P(A or B) = P(A) + P(B) - P(A and B).

Front

What is the principle of inclusion-exclusion in probability?

Back

The principle of inclusion-exclusion is used to calculate the probability of the union of two or more events by including the probabilities of individual events and excluding the probabilities of their intersections.

Front

What is a sample space in probability?

Back

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

Front

What is a favorable outcome in probability?

Back

A favorable outcome is an outcome that satisfies the conditions of the event for which the probability is being calculated.