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Use Excel, or MINITAB to fit the regression model, including residuals and standardized residuals:
DATA SET E Ages and Weights of 31 Randomly Chosen U.S. Nickels (n = 31 nickels) Nickels
Observation Age (yr) Weight (gm) Observation Age (yr) Weight (gm)
1 2 5.043 17 15 4.956
2 15 4.893 18 5 5.043
3 22 4.883 19 10 5.032
4 27 4.912 20 2 5.036
5 38 4.980 21 14 4.999
6 2 5.003 22 1 5.004
7 0 5.022 23 21 4.948
8 28 4.796 24 12 5.045
9 12 4.967 25 40 4.917
10 17 4.951 26 1 5.014
11 13 4.932 27 9 5.001
12 1 4.970 28 22 4.801
13 1 5.043 29 21 4.927
14 4 5.040 30 1 5.035
15 1 4.998 31 16 4.983
16 9 4.956
________________________________________
Source: Randomly chosen circulated nickels were weighed by statistics student Dorothy Duffy as an independent project. Nickels were weighed on a Mettler PE 360 Delta Range scale, accurate to 0.001 gram. The coin's age is the difference between the current year and the mint year.
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