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# Question on correlation and regression

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 Aditya IPCC [ Scorecard : 74] Posted On 27 May 2012 at 17:04 If u=2x+5 and v=-3y-6 and regression coefficient of y on x is 2.4 what is the regression coefficient of v on u?   A)3.6    B)-3.6 C)2.4  D)-2.4   Thanks in advance. Tejaswi Kasturi student-cpt [ Scorecard : 402] Posted On 27 May 2012 at 17:14 y = 2.4x + b now v = -3*(2.4x + b)-6 = -7.2x - 3b-6 = -7.2x - 18 -3b+12 = -3.6(2x+5) + 12-3b = -3.6u +12-3b so coefficient of regression of of v on u is -3.6 Total thanks : 1 times Aditya IPCC [ Scorecard : 74] Posted On 27 May 2012 at 17:32 Thank you intermediate(ipc)course no [ Scorecard : 1446] Posted On 27 May 2012 at 20:01 U = 2x+5         C= 2/5                                                V = 3y-6           d = - 6/3=-2 Vyx = 2.4           rvu = d/c*rxy rvu = ?                     =-2/2/5 * 2.4                                  =-2*5/2*2.4                                  = -5*2.4                                  = - 12.ans.

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