If X is a discrete random variable `P(X gta)` is equal to

Mean of a discrete random variable

Answer the following questions: If X is a discrete random variable, then define median of X.

If X is a discrete random variable which takes the values which takes the values 0,1 and 2 and P(x)=0)= 144/169 ,P(X=1)= 15/169 then P(x=2) is

If x is a discrete random variable and 'a' is a constant show that (i) E(a)=a (ii) E(ax)=aE(x) (iii) E(x-barX)=0

Variance of a discrete random variable

X is a discrete random variable which takes the values of 0,1,2 and P (X=0) = (144)/(169) P(X=1) = (1)/(169) then the value of P(X=2) is ………. .

The variance of the random variable X is equal to

If X is discrete random variable takes the values x_1, x_2, x_3 , ... x_n then sum_(i=1) P(x_i) = ........

Define a discrete random variable X and its mean E(x) and variance Var(x)