Probability and statistical models calculators

Convert positive or negative American odds into an implied outcome probability.

Compare binary predictions with observed classes using four confusion counts and a read-only correlation result.

Compute classification rates and likelihood ratios from a binary confusion table.

Estimate a shared birthday using an approximation that treats all person pairs independently.

Bound the chance of a deviation from the mean using finite variance.

Infer a constant daily growth rate and apply it to a second value and time span.

Find the mean and standard deviation of a sum of independent fair dice.

Convert a modeled success-to-failure ratio into fair odds and independent sequence probabilities.

Compare independent event combinations and constant-probability sequences.

Calculate both-event probability and the associated union, complements and exclusive outcomes.

Calculate the chance that at least one of two independent events occurs.

Find the intersection probability from an independent pair or a conditional probability.

Find the familiar 68%, 95% and 99.7% bands around a normally distributed mean.

Estimate a normal-approximation margin for a sampled proportion.

Calculate a standard roulette bet’s net winning payout and average net change.

Find the probability that the specified success first occurs on a chosen trial.

Solve unions, intersections, exclusive regions and complements for two or three sets.

Compare two independent observed conversion proportions using a pooled normal test.