AP Statistics Formulas

This web page shows the formulas that are provided to students at the Advanced Placement Statistics Exam.

Students do not need to memorize these formulas for the exam, but they should know how to use the formulas. Each formula links to a web page that explains how to use the formula.

Descriptive Statistics

Probability

The following formulas assume that X has a binomial distribution, the probability of success is P, the number of trials is n, and the number of successes are x. And nCx refers to combinations.

The following formulas assume that x is the mean of a simple random sample of size n from an infinitely-large population, having a mean of μ and a standard deviation of σ.

Inferential Statistics