Question

For the binomial distribution, which formula finds the standard deviation? Choose the correct answer below:

a. np
b. npq
c. √np
d. √npq

Answer 1

Answer: D

Explanation:

Given a binomial distribution, the standard deviation can be found by the equation

√
`npq`

where n = number of trials, p = chance of success, and q = chance of failure (or 1 - p).