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variance and covariance exercise

variance and covariance exercise - X 1 2 3 4 5 15 X bar 3 Y...

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X Y X- X bar Y - Y bar Col. C * Col. D (X - X bar)^2 (Y- Y bar)^2 1 2 -2 -4 8 4 16 2 4 -1 -2 2 1 4 3 6 0 0 0 0 0 4 8 1 2 2 1 4 5 10 2 4 8 4 16 sum 15 30 0 0 20
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