Question

12. 5y = 9x - 22 & 20x = 9y + 350 are two
regression lines. Find the correlation
coefficient between x & y.
a) 0.9 b) 0.1 c) -0.9 d) -0.1
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Answer 1

Bxy=9/5 Byx =9/20 therefore r=sq root of 9/5*9/20=.9 (a)