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Score of Psychology Students (x) Hours spent on Facebook (y) X42 (x-1)- 2 y-1 (y-1)~2 UnNWUS 10 A Ey = Ex+ 2 = Ey -2=

Score of Psychology Students (x) Hours spent on Facebook (y) X42 (x-1)- 2 y-1 (y-1)~2 UnNWUS 10 A Ey = Ex+ 2 = Ey -2= [E( x - 1 )- z(y-1)= E (y- 1 )1 2 = Exy=

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