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Age (x) 40 time (y) x-x (x-x) y-y (y-y) (x-x)(y y) 23 7.2 43 9 28 8 21 7.5 45 9.1 34 7.6 43

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Age (x) 40 time (y) x-x (x-x) y-y (y-y) (x-x)(y y) 23 7.2 43 9 28 8 21 7.5 45 9.1 34 7.6 43 8.5 -10.8571 117.8776 -0.92857 0.862245 9.142857 83.59184 0.871429 0.759388 -5.85714 34.30612 -0.12857 0.016531 -12.8571 165.3061 -0.62857 0.395102 11.14286 124.1633 0.971429 0.943673 0.142857 0.020408 -0.52857 0.279388 9.142857 83.59184 0.371429 0.137959 10.08163265 7.967346939 0.753061224 8.081632653 10.8244898 -0.075510204 3.395918367 Sums 237 56.9 608.8571 3.394286 41.02857143 Average 33.85714 8.1285714 Notation x y Sax Syy Sxy

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