Problem
For the binomial distribution, which formula finds the standard deviation? Choose the correct answer below. $\sqrt{n p q}$ np npq $\sqrt{n p}$
Solution
Step 1 ：For the binomial distribution, the formula that finds the standard deviation is \(\sqrt{n p q}\), where n is the number of trials, p is the probability of success, and q is the probability of failure (1-p).
Step 2 ：Final Answer: \(\boxed{\sqrt{n p q}}\)
