Question

Column 2 159.26 463.54 2 161.02 483.55 124.84 575.85 Row 49.3 53.8 56.9 4147.71 567.66 60.6 5 193.22 567.81 65.2 306.68 616.68 72.6 82.4 90.9 375.67 728.8496.5 99.6 11360.48 977.33103.9 612.56 720.15 460.03 782.62 10 424.35 979.52
5. Using the Σ operator write the notation that sums elements in rows 1 to 5 and columns 1 and 2. 6. Calculate the mean and variance of X 7. Calculate the mean and variance of X2.
8. Calculate the covariance between X and X2 9. Calculate the correlation coefficient between Xii and Xi2
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Answer #1

Answer 5 to 9:

Column Row 159.26 161.02 124.84 147.71 193.22 306.68 612.56 460.03 375.67 424.35 360.48 463.54 483.55 575.85 567.66 567.81 616.68 720.15 782.62 728.84 979.52 977.33 49.3 53.8 56.9 60.6 65.2 72.6 82.4 90.9 96.5 99.6 103.9 2 4 9 10 Answer 5: 786.05 2658.41 Answer 6: Mean- 302.34727 Answer 6: Variance- 25,253.25 Answer 7: Mean- 678.50455 Answer 7: Variance - 31,813.20 Answer 8: COV- 17509.89 Answer 9: Cor coeff- 0.68

The above excel with 'show formula'

Column 2 Row 159.26 161.02 124.84 147.71 193.22 306.68 612.56 460.03 375.67 424.35 360.48 2 463.54 483.55 575.85 567.66 567.8

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