Re: ISI 2004 ME - I Answer Key

Posted by Chinni18 on May 11, 2012; 8:49am
URL: http://discussion-forum.276.s1.nabble.com/ISI-2004-ME-I-Answer-Key-tp7515784p7549682.html

Question no.5 @ AJ
From equation (i) we have:
y = 2 + 3x and x = -2/3 + (y/3)
The regression coefficients beta_yx and beta_xy are respectively 3 and 1/3
Therefore correlation coefficient rho would be simply the square root of product of the beta's i.e 1
Similary for equation (ii), you get the beta values as 4 and 1/4, the product of which yields 1 again.
Hence option (C)