Question :- If 0 is the angle between two regression lines , then show that : tan 0= 1-r²/ r  s.d₂s.dy/ s.d²_x + s.d²_y , explain the significance of the formula WHEN R=0 , R=1.

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by just_niki at February 22, 2012

s.d means standard deviation in the above equation ..am sorry i cudn't find the the symbol of standard deviation so i have written "s.d"