# Finding Standard Deviation in a binomial distribution : Help Please

#### MNR

##### New Member
Hello,
I am trying to find the mean and standard deviation of a binomial distribution.
A basket ball player has the following probability for success in two shot free throws.
P(0) is 0.16,
P(1) is 0.48
P (2) is 0.36

I need to find the mean and std deviation.
I get the mean correctly as 1.2, but not able to get the std. deviation of the given answer of 0.69. Requesting guidance