If two lines of Regression are respectively y=ax+b and x=`alphay+beta.` If the two variables have the same mean, then `b//beta`=

If the two lines of regression are 2x-y-4=0 and 9x-2y-38=0 , then the means of x and y variates respectively are

Two lines of regressions are represented by 4x + 10y = 9 and 6x + 3y = 4 . Find the line of regression y on x.

If two ellipse E ( a gt b ) "and " E ( alpha gt beta ) have the same eccentricity , then

Find the equations of two lines of regression for the data: And hence find an estimate of variable Y for X = 3.5 from the appropriate line of regression.

Let X and Y be two related variables. The two regression lines are given by x-y+1=0 and 2x-y+4=0 . The two regression lines pass through the point:

The equations of the two lines of regression are 6x + y− 31 = 0 and 3x + 2y− 26=0 . Calculate the mean values of x and y .