A random variable X follows binomial distribution with mean α and variance β. Then which relation between α and β is correct?

0 < α < β 0 < β < α α < 0 < β β < 0 < α

0 < β < α

Suppose X = B(n.p) then  $\alpha = np , \beta = npq$ As $0< q <1 , \text { we get }0 < npq < np$ $ \Rightarrow \alpha > \beta > 0$