# Probability Theory

## Variance

Squared expectation of the difference between the random variables and the expectation of the random variables. It measures the variation of the random variables.

Submitted by kolier on Tue, 05/18/2010 - 21:38

## Chebyshev's Inequality

In probability theory, Chebyshev's inequality (also known as Tchebysheff's inequality, Chebyshev's theorem, or the BienaymĂ©â€“Chebyshev inequality) is one of the basic inequality.

Submitted by kolier on Tue, 05/18/2010 - 21:20