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• Level: GCSE
• Subject: Maths
• Word count: 1548

# Used car prices

Extracts from this document...

Introduction

As part of my GCSE Statistics coursework investigation, I have been asked to investigate the factors, which affect the price of a car. To do this I have to break the investigation down into smaller questions. From my point of view the following information that we have been given, has very little or no affect on the price of the car, therefore they will not be investigated:

• Insurance
• Doors
• Central locking
• Seats
• Gearbox
• Airbags

The question I have chosen, “What factors affect the price of a used car?” now needs to be broken down into sub-questions to find out which factors affect the price of a car the most. The sub-questions are as follows:

• How do the make, model and age of a car affect its price?
• How does the colour of the car affect the value of the car?
• If the car has been serviced, what affect does this have on the price of the car?
• How does a cars mileage affect its price?
• Does the number of owners affect the car value?
• Does the length of a car’s MOT affect its value?
• If a car has air conditioning, then does its value rise?

Middle

Clio

7403

1495

9

red

98000

no

3

5

no

42

Citroen

AX Diesel

7680

1295

6

grey

yes

4

no

44

Nissan

Micra

5340

1595

9

white

40000

yes

1

12

no

46

Nissan

Sunny

7799

2595

7

white

41000

yes

1

5

no

47

Vauxhall

Astra

13740

2900

6

blue

58000

yes

1

12

no

49

Daewoo

Nubira

13850

6895

4

black

14730

yes

1

10

yes

50

Daewoo

Lanos

9525

4395

3

blue

32400

yes

1

9

no

51

Volkswagen

Golf

12999

3595

6

red

58000

yes

2

5

no

52

Ford

Escort

12125

4295

3

white

29000

yes

1

9

no

55

Fiat

Punto

7864

4500

3

white

13000

no

1

12

no

56

Lexus

LS400

39728

6250

7

blue

yes

2

3

yes

62

Peugot

406LX

13975

5795

3

blue

53000

yes

1

3

yes

63

Volkswagen

Golf GTi

16139

6995

5

black

35000

yes

2

4

no

64

Ford

Focus

14505

8800

2

black

7200

yes

1

n/a

yes

65

Ford

Puma

13230

8250

3

silver

34000

yes

1

12

no

66

Peugot

206

9125

7500

1

silver

18000

yes

1

n/a

yes

67

Peugot

406

17490

7500

1

silver

17500

yes

1

n/a

yes

70

Fiat

Bravo

10810

4995

2

green

18500

yes

1

n/a

no

74

Volkswagen

Beetle

14950

13500

1

silver

6500

yes

1

n/a

no

76

Suzuki

Vitara

10800

2995

8

red

50000

no

2

12

no

77

Mercedes

AvantGarde

17915

11750

2

silver

17000

yes

1

n/a

no

78

Audi

80

17683

3995

7

purple

103000

no

2

4

no

80

Ford

Escort

13183

3495

7

red

43000

yes

2

9

no

81

Conclusion

The model of the car also affects the price of a car in the sense that a Vauxhall Astra would be cheaper than a Vauxhall Calibre because the Astra has fewer features, for example, air conditioning.

The age of the car affects its value because the older the car the lower its value.

These predictions may be incorrect, so we need to investigate the affect these factors have on a cars value.

The following data has been sorted in descending order of price when new. As you can see the cars at the top of the list are the cars not very often seen.

 Car Make Model Price when 95 Rolls Royce Silver Spirit 94651 56 Lexus LS400 39728 16 Rover 820 SLi 21586 93 Vauxhall Calibra 18675 3 Vauxhall Vectra 18580 77 Mercedes AvantGarde 17915 81 Ford Mondeo 17780 78 Audi 80 17683 67 Peugot 406 17490 63 Volkswagen Golf GTi 16139 1 Ford Orion 16000 17 Mitsubishi Carisma 15800 74 Volkswagen Beetle 14950 7 Mitsubishi Carisma GDI 14875 64 Ford Focus 14505 83 Rover 416i 14486 2 Mercedes A140 Classic 14425 4 Vauxhall Astra 14325 88 Citroen Xantia 14065 62 Peugot 406LX 13975 49 Daewoo Nubira 13850 47 Vauxhall Astra 13740 10 Vauxhall Tigra 13510 100 Vauxhall Vectra 13435 65 Ford Puma 13230 80 Ford Escort 13183 9 Renault Megane 13175 51 Volkswagen Golf 12999 52 Ford Escort 12125 21 Daewoo Lanos 11225 70 Fiat Bravo 10810 76 Suzuki Vitara 10800 34 Fiat Tempra 10423 82 Mazda Pegasus 10420 11 Fiat Bravo 10351 28 Vauxhall Cavalier 10150 99 Ford Escort 9995 32 Rover 214i 9565 50 Daewoo Lanos 9525 66 Peugot 206 9125 14 Vauxhall Corsa 8900 92 Volkswagen Polo 8710 15 Fiat Punto 8601 22 Rover 114 Sli 8595 5 Nissan Micra 7995 35 Ford Fiesta 7875 55 Fiat Punto 7864 84 Vauxhall Corsa 7840 46 Nissan Sunny 7799 42 Citroen AX Diesel 7680 91 Fiat Punto 7518 39 Renault Clio 7403 33 Ford Fiesta 7310 25 Rover Metro 6645 18 Fiat Cinquecento 6009 38 Citroen Debut 5715 26 Vauxhall Nova 5599

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