Question

for the binomial distribution, which formula finds the standard deviation?
choose the correct answer below.
np
npq
√np
√npq

Explanation:

Step1: Recall binomial standard deviation formula

The formula for the standard deviation of a binomial distribution is $\sigma=\sqrt{npq}$, where $n$ is the number of trials, $p$ is the probability of success, and $q = 1 - p$ is the probability of failure.

Answer:

$\sqrt{npq}$ (the second option)