2, find the mean of probability

3, calculate (x-u)^2.p(x).

4, find standard deviation

A survey asked couples in an urban neighborhood how many children they have the discrete probabilty distribution below shows the results for 0. 1. 2. and 3 children Identify the four values in the third column x. P(x) You do not need to show your calculations P(x) x. P(x) 0 0.42 1 0 31 2 0.19 3 3 0.08 Paragraph B TEIE