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.
3 Replies
Tejaswi Kasturi
(student-cpt)
(427 Points)
Replied 27 May 2012
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
intermediate(ipc)course
(no)
(1460 Points)
Replied 27 May 2012
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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