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Used car prices

Extracts from this document...

Introduction

image00.png

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?
...read more.

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

...read more.

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 whenimage01.png

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

13435image02.png

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

6009image03.png

38

Citroen

Debut

5715

26

Vauxhall

Nova

5599

...read more.

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