It is given that `barX=10, barY=90, sigma_(X)=3, sigma_(Y)=12 and r_(XY)=0.8.` The regression equation of X on Y is

If barx=18,bary=100, sigma_(x)=14,sigma_(y)=20 and correlation r_(xy)=0.8 , find the regression equation of y on x.

You are given the following results on two variables X and Y: barx=36, bary=85, sigma_(x) =11 , Var (Y) = 64 and r (X, Y) = 0.66. Find the regression equations and estimate the value of x when y= 75.

By using the data barx=25, bary=30, b_(yx)=1.6 and b_(xy)=0.4 find (a) The regression equation y on x. (b) What is the most likely value of y when x=60? (c ) What is the coefficient of correlation between x and y ?

If r = 0.5, sigma_x =3, sigma_y^2=16 then b_(yx) =…

If r=0.5,sigma_x=3 ,sigma_y^2 =16 then b_(xy) = .....

If sigma_(x) = 3, sigma_(y) = 4 , and b_(xy) = (1)/(3) , then the value of r is

If barx =18, bary=100 , Var(X)=196, Var(Y) = 400 and p(X,Y) = 0.8, find the regression lines. Extimate the value of y when x = 70 and that of x when y = 90.

If is given the sigma_(x)^(2)=9,r=0.6 and regression equation of Y on X is 4x-5y+33=0 find Var (Y).