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I am trying to work out what factor makes a car decrease in value the most. I have chosen a large sample of cars which have had a service history and erased some of the factors that I think I will not need. The factors I am not using are make and model, colour, engine size, fuel, MOT, tax, insurance, doors, style, seats, air conditioning, gearbox and airbags. I have also got rid of the cars that do not have all of the sufficient information. I am using how many miles the car has driven, the age of the car and MPG (miles per gallon). I am using these factors because I think that these factors most effect the value of the cars price depreciation. Car Information Car Price When New 2nd HandPrice Age MPG Mileage Price loss 1 16000 7999 1 25-47 7000 8001 2 14425 10999 1 29-50 14000 3426 3 18580 7999 2 26-44 20000 10581 5 7995 3999 3 40-55 37000 3996 6 13610 4999 4 30-50 33000 8611 7 14875 5999 2 34-56 24000 8876 8 22980 6999 4 25-41 30000 15981 10 13510 7499 4 33-57 27000 6011 11 10351 3495 5 31-53 51000 6856 12 18140 6499 4 26-44 49000 11641 13 28210 5995 8 21-38 55000 22215 14 8900 4995 2 26-46 24000 3905 15 8601 3995 4 38-51 31000 4606 16 21586 3795 6 22-38 51000 17791 18 6009 1995 6 43-60 20000 4014 19 13586 3795 6 30-55 49000 9791 20 6295 1795 8 40-58 47000 4500 21 11225 5999 3 24-46 42000 5226 22 8595 2495 6 35-56 33000 6100 24 6864 1495 8 44-55 51000 5369 27 13800 7495 2 34-53 25000 6305 28 10150 850 10 33-53 73000 9300 31 5995 795 7 32-53 45000 5200 35 7875 1495 11 32-50 74000 6380 38 5715 1495 7 50-62 50000 4220 40 8272 1500 7 32-52 32000 6772 41 13650 6995 6 26-49 71000 6655 44 5340 1595 9 40-55 40000 3745 46 7799 2595 7 32-55 41000 5204 47 13740 2900 6 32-52 58000 10840 49 13850 6895 4 21-39 14730 6955 50 9525 4395 3 25-48 32400 5130 51 12999 3595 6 30-50 58000 9404 52 12125 4295 3 28-47 29000 7830 53 11800 4700 5 29-46 34000 7100 54 170841 37995 8 8-18 55000 132846 58 12590 4300 4 30-46 17000 8290 59 24086 2975 5 25-41 96000 21111 61 10954 6795 1 30-52 3000 4159 62 13975 5795 3 23-42 53000 8180 63 16139 6995 5 26-48 35000 9144 64 14505 8800 2 31-51 7200 5705 65 13230 8250 3 29-46 34000 4980 66 9125 7500 1 45-60 18000 1625 67 17490 7500 1 20-38 17500 9990 68 12895 7995 1 34-50 9500 4900 69 19530 14999 1 26-47 2000 4531 70 10810 4995 2 31-53 18500 5815 71 27855 13995 1 25-34 40500 13860 72 26425 17500 2 25-44 22000 8925 73 32995 19495 6 19-38 46000 13500 74 14950 13500 1 24-41 6500 1450 75 24086 2975 6 25-41 96000 21111 77 17915 11750 2 28-50 17000 6165 80 13183 3495 7 29-46 43000 9688 81 17780 7995 4 24-44 30000 9785 83 14486 3685 6 30-55 64000 10801 87 13355 2574 9 27-45 49000 10781 88 14065 2450 8 26-46 49000 11615 92 8710 4693 5 37-59 50000 4017 95 94651 14735 9 10-19 70000 79916 Hypothesis 1 I think the higher the mileage of a car, the lower the second hand price of the car will be...

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