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 Sxx Syy Sxy 14-21 22-29 30-37 38-45 SUMMARY 89 99.6 98.6 98.5 Groups Count Sum Average Variance 98.4 98.2 98.6 98.1 14-21 5 480.7 96.14 16.253 97.7 99 97 97.5 22-29 6 591.4 98.56667 0.394667 98.5 98.2 97.5 97.3 30-37 5 489 97.8 97.1 97.9 97.3 97.4 38-45 5 488.8 97.76 0.565 0.268 98.5 Source of Variation SS df MS F P-value Between Groups 16.58838 5.52946 1.336809 0.295467 Within Groups 70.31733 4.136314 Total 86.90571