a problem on correlation from dse

Posted by ravian on Feb 20, 2011; 6:50am
URL: http://discussion-forum.276.s1.nabble.com/a-problem-on-correlation-from-dse-tp6045153.html

q) the correlation coefficient between x and y is 'r' and the correlation coefficient between x and (x+y) is 'R'.

i) r>R
ii) r<R
iii) r=R
iv) can't be determined