If the regression line of y on x and of x on y are given by 2x + 3y = –1 and 5x + 6y = –1, then obtain
the arithmetic means of x and y.
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If for a bivariate data x̅ = 10, y̅ = 12, V(x) = 9, σy= 4 and r = 0.6, estimate y at x = 5.
If for a bivariate data byx = -1.2 and bxy = -0.3, find the correlation coefficient between x and y.
Find the line of regression of X on Y for the following data: n=8, Σ(X-X̅)²=36, Σ(Y-Y̅)²=44, Σ(X-X̅)(Y-Y̅)=24.