Find the equations of the two lines of regression for the following observations : (3, 6), (4, 5), (5, 4), (6,3), (7,2). Find the estimation of y for x = 2.5.

The range of the following set of observations 2,3,5,9, 8, 7, 6, 5, 7, 4, 3 is

Find the equations of the lines passing through the point (4,5) parallel to lines 3x=4y+7 .

Find the regression coefficients b_(yx) and b_(xy) and the two lines of regression for the following data: {:(x,2,6,4,7,5),(y,8,8,5,6,2):}

Find the equation of the regression line of y on x, if the observation (x,y) are as follows : (1, 4), (2, 8), (3, 2), (4, 12), (5, 10), (6, 14), (7, 16), (8, 6), (9, 18) Also, find the estimated value of y when x = 14.

Find cov (x, y) for the following data : {:(x,3,4,5,6,7),(y,8,7,6,5,4):}

Find the value of x+y from the following equation: 2[(x,5),(7y,-3)]+[(3,-4),(1,2)]=[(7,6), (15,-4)]

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.

Find the equation of the tangent to the curve y=-5x^2+6x+7 at the point (1//2,\ 35//4) .

The two lines of regression for a bivariate distribution (X,Y) are 3 x + y = 7 and 3x + 5y = 11 . Find the regression coefficient b_(yx)

Find the line of regression of y on x from the following table : Hence estimate the value of y when x=6.