Complement Rule
probability
Finds the probability that event A does not occur.
Math reference
Math Formula Reference
Search structured references across algebra, geometry, trigonometry, calculus, statistics, probability, number theory, and discrete math.
Formula catalog
Browse formulas
17 references found. Results are rendered on the server and limited to 25 per page.
Addition Rule
probability
Finds probability of A or B, accounting for overlap.
Multiplication Rule
probability
Finds probability that A and B both occur.
Conditional Probability
probability
Finds probability of A given B has occurred.
Bayes' Theorem
probability
Updates the probability of A after observing B.
Independent Events
probability
Characterizes events whose probabilities do not affect each other.
Law of Total Probability
probability
Combines conditional probabilities over a partition of outcomes.
Expected Value of a Discrete Variable
probability
Computes the long-run average of a discrete random variable.
Variance of a Random Variable
probability
Measures spread of a random variable using expectations.
Permutations
probability
Counts ordered selections of r items from n distinct items.
Combinations
probability
Counts unordered selections of r items from n distinct items.
Binomial Probability
probability
Finds the probability of k successes in n independent trials.
Binomial Distribution Mean
probability
Finds the mean number of successes in a binomial distribution.
Binomial Distribution Variance
probability
Finds variance of a binomial distribution.
Geometric Distribution Probability
probability
Finds probability that the first success occurs on trial k.
Normal Distribution Density
probability
Gives the probability density of a normal random variable.
Binomial Coefficient
discrete math
Counts k-element subsets of an n-element set.