# What is the formula for the standard deviation of a binomial distribution?

Jan 1, 2016

SD of Binomial Distribution $\sigma = \sqrt{n p q}$

#### Explanation:

SD of Binomial Distribution $\sigma = \sqrt{n p q}$

Where -
$n$ - number of trials
$p$ - Probability of success
$q$ - Probability of failure, equal to $1 - p$