How do you find the standard deviation of a probability distribution?
In statistics, standard deviation is the amount of variation or dispersion of the set of values.
Answer: The standard deviation for a binomial probability distribution is given by √ npq.
For a binomial distribution,
µ = np, which signifies the expected number of success.
σ2 = npq , σ2 is the variance.
Since, the standard deviation is the square root of the variance,
Therefore, σ = Standard deviation = √ npq