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Regression Modeling with Actuarial and Financial Applications by Edward W. Frees

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Brief Answers to Selected Exercises

Chapter 1

  1.1 a(i).   Mean = 12,840, and median = 5,695.

a(ii).  Standard deviation = 48,836.7 = 3.8 times the mean. The data appear to be skewed.

b.       The plots are not presented here. When viewing them, the distribution appears to be skewed to the right.

c(i).   The plots are not presented here. When viewing them, although the distribution has moved toward symmetry, it is still quite lopsided.

c(ii).  The plots are not presented here. When viewing them, the distribution appears to be much more symmetric.

d.       Mean = 1,854.0, median = 625.7, and standard deviation = 3,864.3. A similar pattern holds ...

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