Nov
19
Consider 3 random variables X,Y,Z Suppose corr(x,y) =0.4 and corr(z,y)=0.3 which of the following statements is true?
a) corr(x,z) cannot be negative.
b) corr(x,z) has to be larger than 0.3
c) corr(x,z) cannot be negative
d) none of the above.
can u throw some light on this question.
thanks and do reply soon.
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