Re: JNU 2018

Posted by gyandeep on Oct 29, 2017; 5:52am
URL: http://discussion-forum.276.s1.nabble.com/JNU-2018-tp7608174p7608228.html

U can get answer by using correlation coefficient formula of random variable that is cov(W,Y) / standard deviation of Y. Standard deviation of W.

U can also go through graphical method... Draw Y nd W 

U can aslo get answer by change X what are the values for Y nd W respectively.  As Y nd W both are AP with 3 nd -3 as common difference respectively. 

By which we can conclude that both are strongly correlated bt in negative direction so correlation coefficient of Y nd W will be -1. 

( as I think) 

On Oct 29, 2017 10:44 AM, "Gyan Deep" <[hidden email]> wrote:

Solution of correlation coefficient question.

On Oct 29, 2017 9:46 AM, "soimmoi [via Discussion forum]" <[hidden email]> wrote:

Gyandeep
w= -3x+6
y = 3x+6
so there no relation as W = -Y
the individual correlation of W with x is -1 and of  y with x = 1
but can you explain on what basis you're saying w&y have correlation -1.

thank you for the reply

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