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### 2

1. 1. 2 x y x2 y2 xy 1 811.9 879.9 659181.61 774224.01 714390.81 2 848.9 884 720631.21 781456 750427.6 3 891.5 885.4 794772.25 783933.16 789334.1 4 906.9 881.3 822467.61 776689.69 799250.97 5 916.5 863.9 839972.25 746323.21 791764.35 6 961 850.9 923521 724030.81 817714.9 7 963 839.4 927369 704592.36 808342.2 8 996.3 816.6 992613.69 666835.56 813578.58 9 1033.4 820.1 1067915.56 672564.01 847491.3410 1068 815.2 1140624 664551.04 870633.611 1096.9 817.6 1203189.61 668469.76 896825.4412 1111.9 812.3 1236321.61 659831.29 903196.3713 1156.6 816.9 1337723.56 667325.61 944826.5414 1178.8 798 1389569.44 636804 940682.415 1193 777.2 1423249 604039.84 927199.616 1212.4 777.3 1469913.76 604195.29 942398.5217 1226.1 781.8 1503321.21 611211.24 958564.9818 1238 768.2 1532644 590131.24 951031.619 1243.9 769.5 1547287.21 592130.25 957181.0520 1269 774.3 1610361 599540.49 982586.7∑= 21324 16429.8 23142648.6 13528878.9 17407421.65
2. 2. 23142649 2 (∑x)2 = (21324)2=SCx= ∑x - - 406999.78 n 20 13528879 2 (∑y)2 = (16429.8)2=SCy= ∑y - - 31962.458 n 20 17407422 (21324)(16429.8 ∑x*∑y =SCxy= ∑xy- - ) -110031.11 n 20 - 0.96471342 -110031.11 = 4 114055.7468 0.9306719 2 r= 9
3. 3. - n∑xy-∑x∙∑ya1= = 20(17407422)-(21324)(16429.8) -2200622.2 = 0.27034685 n∑x2-(∑x)2 20(23142649)-(21324)2 8139995.6 (23142649)*(16429.8)- ∑x2∙∑y-∑x∙∑xya0= = (21324)*17407421.65 9033228375 = 1109.73382 2 2 2 n∑x -(∑x) 20(23142649)-(21324) 8139995.6