(a) If X1, X2, X3, ..., Xn and Y1, Y2, Y3, ..., Yn are the variate values of two variables X and Y, and their geometric means are G1and G2, respectively, then geometric mean of (xj/yi); i = 1, 2, ... n will be (G1/G2).
(b) If each value of X is divided by 2 and of Y is multiplied by 2, then b'YX will be same as b.
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