# Probability/Statistics Calculators

## P-Value Calculator

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

## Average (Mean) Calculator

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

## Sample/Population Standard Deviation Calculator

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

## Sample/Population Variance Calculator

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

## Median Calculator

The calculator will find the median for the given sample data, with steps shown.

## Mode Calculator

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

## Percentile Calculator

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

## Binomial Distribution Calculator

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

## Poisson Distribution Calculator

The calculator will find the Poisson and cumulative probabilities, as well as the mean, variance and standard deviation of the Poisson distribution.

## Hypergeometric Distribution Calculator

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

## Z-Score Calculator

The calculator will find the Z-Score (standardized score), given the unstandardized value, mean and standard deviation of the population, with steps shown.

## Margin of Error Calculator

The calculator will find the margin of error from the given sample size and distribution, with steps shown.

## Normal Distribution Calculator

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

## Geometric Distribution Calculator

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

## Percentile Rank, Class Rank Calculator

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