# Probability/Statistics Calculators

## P-Value Calculator

Calculator will find p-value for two-tailed, right-tailed and left-tailed tests from normal, Student's (T-distribution), chi-squared and Fisher distributions (F-distribution).

## Average (Mean) Calculator

For a given group of numbers calculator will find their average (mean) with steps shown.

## Sample/Population Standard Deviation Calculator

For a given set of observations calculator will find their standard deviation (either sample or population) with steps shown.

## Sample/Population Variance Calculator

For a given set of values calculator will find their variance (either sample or population) with steps shown.

## Median Calculator

Caclulator will find median for a given sample data with steps shown.

## Mode Calculator

For a given set of data calculator will find mode with steps shown.

## Percentile Calculator

For a given set of data calculator will find pth percentile with steps shown.

## Binomial Distribution Calculator

Calculator will find binomial and cumulative probabilities, as well as mean, variance and standard deviation of binomial distribution.

## Poisson Distribution Calculator

Calculator will find poisson and cumulative probabilities, as well as mean, variance and standard deviation of Poisson distribution.

## Hypergeometric Distribution Calculator

Calculator will find hypergeometric and cumulative probabilities, as well as mean, variance and standard deviation of hypergeometric distribution.

## Z-Score Calculator

Calculator will find a z-score (standardized score), given an unstandardized value, mean and standard deviation of the population with steps shown.

## Margin of Error Calculator

Calculator will find margin of error from given sample size and distrinution, with steps shown.

## Normal Distribution Calculator

For given mean and standard deviation, calculator will find various probabilities for a random variable, and vice versa: for specified probability it will find values of random variable.

## Geometric Distribution Calculator

Calculator will find simple and cumulative probabilities, as well as mean, variance and standard deviation of geometric distribution.

## Percentile Rank, Class Rank Calculator

For a given set of data and score calculator will find percentile class rank with steps shown.