If a is a constant prove that
(i) var(a)=0
(ii) `var (aX)=a^(2)var(X)`

(iii)`Var(ax+b)=a^(2)var(X)`

If a and b are constants, then show that var (ax+b)=a^2 var (x) .

Prove that Var (a+bx)= b^(2) Var(x)

if a and b are any two constants, then prove that Var (aX+b)=a^2Var(X) .

If k is a constant, then Var(k) is equal to -

Let x_(1),x_(2),......,x_(n) be values taken by a variable Xandy_(1),y_(2),.........,y_(n) be the values taken by a variable Y such that y_(i)=ax_(i)+b,i=1,2,n. Then,(a)Var(Y)=a^(2)Var(X)(b)Var(X)=a^(2)Var(Y)(c)Var(X)=a^(2)Var(Y)(c)Var(X)=Var(X)+b(d) none of these

If x is a random variable, var(x)=2 then var(2x+3)=

If X and Y are two independent variables, then prove that var(aX+bY)=a^2var(X)+b^2var(Y) , where a and b are constants.

Var(5x-2)=?if Var(X)=1

answer any one question : (ii) if X and Y are two independent variables , then rove that var(aX+bY ) =a^2 var (X) +b^2 var (Y) , where a and b are constants

Let x_1, x_2, ...... ,x_n be values taken by a variable X a n d y_1, y_2,.......... ,y_n be the values taken by a variable Y such that y_i=a x_i+b ,i=1,2,3.... Then, (a) Var.(Y)= a^2Var.(X) (b) Var.(X)=a^2Var.(Y) (c) Var.(X)=Var.(X)+b (d) none of these