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Computations. r xy = n Σ XY - Σ X Σ Y [n Σ X 2 – ( Σ X) 2 ][n Σ Y 2 - ( Σ Y) 2 ] = 6(870)- (310)(9) [6(23150)– (310) 2 ][6(39)- (9) 2 ].
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Computations rxy = n ΣXY - ΣX ΣY [n ΣX2 – (ΣX)2][n ΣY2 - (ΣY)2] = 6(870)-(310)(9) [6(23150)– (310)2][6(39)- (9)2]