Chapter 15 Problems for the Final Exam April 18, 2011
1. Multiple regression problems Mountain Bike Sales (n = 30 stores)
CompetingAds
(x2) 102.2 99.6 107.1 110.1 93.5 95.6 102.5 94.8 101.0 95.5 100.0 110.4 98.2 86.1 86.3 94.7 96.5 90.6 89.6 101.1 96.8 99.8 111.1 94.0 99.7 98.2 104.7 85.5 92.5 93.1 Obs UnitsSold(Y) FloorSpace(x1) 1 1015 72.9 2 903 56.6 3 1293 80.4 4 1479 93.4 5 1413 84.5 6 1207 69.8 7 999 77.4 8 1172 75.3 9 1110 75.5 10 1270 63.6 11 1448 84.5 12 1327 74.6 13 910 60.4 14 455 8.2 15 1052 48.6 16 1125 49.6 17 915 57.4 18 1079 48.5 19 1493 102.1 20 885 55.2 21 1069 56.0 22 1220 76.8 23 1124 59.2 24 1043 49.0 25 1369 78.5 26 1244 59.4 27 1361 100.0 28 1421 76.3 29 782 41.8 30 1210 65.2
Price (x3) 1146 1261 1408 729 1227 966 1400 1277 1137 954 856 892 1024 1028 1170 984 1200 1725 1588 1298 1359 1469 480 1435 823 1274 1165 1054 860 895
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