The formula to find the standard deviation of a binomial distribution is:
σ = √n*p*(1−p)
Here, n is the sample size and p is the population proportion.
To calculate the standard deviation for a binomial distribution, you need to specify the n and p in the boxes below, then click the ‘Calculate’ button:
σ = 2.2361
Calculation steps:
σ = √n*p*(1−p)
σ = √20*0.5*(1−0.5)
σ = 2.2361
Use this calculator whenever you want to find the standard deviation of your binomial distribution quickly.