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Scatter diagrams equations.

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Σx = 58, Σx2 = 886, Σy = 632, Σy2 = 89,322, and Σxy = 8,727

Compute r and round to 3 decimal places. I have tried 1.033 and 1.034, which are both "wrong" on my homework. 

Feb 6th, 2015

   

based on the above formula, you also need a value for n

r = (8727n - 58*632) /  [ sqrt(n*886-58^2) * sqrt(n*89322 - 632^2)]

Feb 6th, 2015

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