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9.11 For the land rent data in Table 7.5, compute the diagnostic measures ŷi. Ei, hii, ri, ti, and D₁. Display these in a table similar to Table 9.1. Are PROBLEMS 241 there outliers or potentially influential observations? Calculate PRESS and compare to SSE.

9.11 For the land rent data in Table 7.5, compute the diagnostic measures ŷi. Ei, hii, ri, ti, and D₁. Display these in a table similar to Table 9.1. Are PROBLEMS 241 there outliers or potentially influential observations? Calculate PRESS and compare to SSE.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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9.11 For the land rent data in Table 7.5, compute the diagnostic measures ŷi. Ei, hii, ri, ti, and D₁. Display these in a table similar to Table 9.1. Are PROBLEMS 241 there outliers or potentially influential observations? Calculate PRESS and compare to SSE.
Transcribed Image Text:9.11 For the land rent data in Table 7.5, compute the diagnostic measures ŷi. Ei, hii, ri, ti, and D₁. Display these in a table similar to Table 9.1. Are PROBLEMS 241 there outliers or potentially influential observations? Calculate PRESS and compare to SSE.
TABLE 9.1 Residuals and Influence Measures for the Chemical Data with Dependent Variable y₁ ŷi 42.19 31.00 27.74 21.03 19.40 15.0 12.69 12.2 12.28 4.3 5.57 19.3 20.22 6.4 4.76 37.6 35.68 18.0 13.09 26.3 27.34 9.9 13.51 -3.605 25.0 26.93 -1.929 14.1 15.44 15.2 15.44 15.9 19.54 19.6 19.54 Observation 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 y TABLE 7.5 Land Rent Data 18.38 20.00 11.50 25.00 52.50 82.50 25.00 30.67 12.00 61.25 60.00 57.50 31.00 60.00 72.50 60.33 49.75 Yi 41.5 33.8 27.7 X1 21.7 19.9 15.50 22.29 12.36 31.84 83.90 72.25 27.14 40.41 12.42 69.42 48.46 69.00 26.09 62.83 77.06 58.83 59.48 X2 17.25 18.51 11.13 5.54 5.44 20.37 31.20 4.29 8.69 6.63 27.40 31.23 28.50 29.98 13.59 45.46 35.90 E -0.688 2.798 -0.394 1.457 -0.042 -0.020 0.670 0.313 0.495 0.230 2.307 0.140 1.076 -0.082 0.228 -0.040 -1.270 0.186 -0.609 -0.917 0.053 -0.408 1.642 0.233 0.811 1.923 0.240 0.954 4.906 0.164 2.320 - 1.040 0.146 -0.487 -1.795 0.245 0.250 -1.342 0.258 -0.674 -0.964 -0.242 0.258 -0.121 -3.642 0.217 -1.780 0.058 0.217 0.028 X3 hi 0.430 0.310 0.155 0.139 0.129 .24 .20 .12 .12 .04 .05 27 .10 .41 .04 .12 .08 21 .17 .05 .16 .32 y 8.50 36.50 60.00 16.25 50.00 11.50 35.00 75.00 31.56 48.50 77.50 21.67 19.75 56.00 25.00 40.00 56.67 XI 9.00 20.64 81.40 18.92 50.32 21.33 46.85 65.94 38.68 51.19 59.42 24.64 26.94 46.20 26.86 20.00 62.52 4₁ -0.383 1.520 -0.019 0.303 0.222 1.082 -0.039 -0.596 -0.396 0.801 0.951 2.800 -0.474 -1.956 -0.961 -0.661 -0.117 -1.937 0.027 X₂ 8.89 23.81 4.54 29.62 21.36 1.53 5.42 22.10 14.55 7.59 49.86 11.46 2.48 31.62 53.73 40.18 15.89 D₁ 0.029 0.239 0.000 0.004 0.002 0.047 0.000 0.021 0.002 0.050 0.072 0.264 0.010 0.261 0.077 0.039 0.001 0.220 0.000 X3 .08 .24 .05 .72 .19 .10 .08 .09 .17 .13 .13 .21 .10 26 .43 .56 .05
Transcribed Image Text:TABLE 9.1 Residuals and Influence Measures for the Chemical Data with Dependent Variable y₁ ŷi 42.19 31.00 27.74 21.03 19.40 15.0 12.69 12.2 12.28 4.3 5.57 19.3 20.22 6.4 4.76 37.6 35.68 18.0 13.09 26.3 27.34 9.9 13.51 -3.605 25.0 26.93 -1.929 14.1 15.44 15.2 15.44 15.9 19.54 19.6 19.54 Observation 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 y TABLE 7.5 Land Rent Data 18.38 20.00 11.50 25.00 52.50 82.50 25.00 30.67 12.00 61.25 60.00 57.50 31.00 60.00 72.50 60.33 49.75 Yi 41.5 33.8 27.7 X1 21.7 19.9 15.50 22.29 12.36 31.84 83.90 72.25 27.14 40.41 12.42 69.42 48.46 69.00 26.09 62.83 77.06 58.83 59.48 X2 17.25 18.51 11.13 5.54 5.44 20.37 31.20 4.29 8.69 6.63 27.40 31.23 28.50 29.98 13.59 45.46 35.90 E -0.688 2.798 -0.394 1.457 -0.042 -0.020 0.670 0.313 0.495 0.230 2.307 0.140 1.076 -0.082 0.228 -0.040 -1.270 0.186 -0.609 -0.917 0.053 -0.408 1.642 0.233 0.811 1.923 0.240 0.954 4.906 0.164 2.320 - 1.040 0.146 -0.487 -1.795 0.245 0.250 -1.342 0.258 -0.674 -0.964 -0.242 0.258 -0.121 -3.642 0.217 -1.780 0.058 0.217 0.028 X3 hi 0.430 0.310 0.155 0.139 0.129 .24 .20 .12 .12 .04 .05 27 .10 .41 .04 .12 .08 21 .17 .05 .16 .32 y 8.50 36.50 60.00 16.25 50.00 11.50 35.00 75.00 31.56 48.50 77.50 21.67 19.75 56.00 25.00 40.00 56.67 XI 9.00 20.64 81.40 18.92 50.32 21.33 46.85 65.94 38.68 51.19 59.42 24.64 26.94 46.20 26.86 20.00 62.52 4₁ -0.383 1.520 -0.019 0.303 0.222 1.082 -0.039 -0.596 -0.396 0.801 0.951 2.800 -0.474 -1.956 -0.961 -0.661 -0.117 -1.937 0.027 X₂ 8.89 23.81 4.54 29.62 21.36 1.53 5.42 22.10 14.55 7.59 49.86 11.46 2.48 31.62 53.73 40.18 15.89 D₁ 0.029 0.239 0.000 0.004 0.002 0.047 0.000 0.021 0.002 0.050 0.072 0.264 0.010 0.261 0.077 0.039 0.001 0.220 0.000 X3 .08 .24 .05 .72 .19 .10 .08 .09 .17 .13 .13 .21 .10 26 .43 .56 .05
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