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Introduction

Maths – Handling Data Coursework

Used Cars

Plan & Introduction

In my data handling coursework, used cars. I am going to investigate the effects of used car selling prices. I will do this by putting the data in to a scatter graph. With the data I am going to determine whether my hypotheses are right. If not I will then try to discover the problem.

My data will be collected completely

Middle

16385

3335

7

22000

79

Subaru

Forester

16945

4550

9

50000

83

Land Rover

Discovery

30805

8715

7

43000

94

Seat

Cordoba

9995

1570

8

38000

99

Suzuki

Alto

6700

1120

9

57000

103

Toyota

Supra

41500

7730

11

52000

108

Ford

Fiesta

13520

2330

8

12500

112

Vauxhall

Tigra

11675

2025

11

90000

113

Ford

Cougar

19990

4470

8

10000

120

Nissan

Almera

13075

9075

2

90000

128

Subaru

Impreza

13950

6130

6

15000

134

Ford

Galaxy

18745

3885

11

10000

142

Conclusion

The two outliers are Mercedes. This leads me to conclude that Mercedes is more expensive. This could be because it is a business car.

 Car Price Age Make Price no. Used Used 6 4340 4 Suzuki 4340 20 755 11 Ford 755 22 7100 6 Audi 7100 30 24435 4 Mercedes 24435 33 1560 9 Seat 1560 43 1920 8 Mazda 1920 49 17595 5 Mercedes 17595 My Results show no correlation; this would lead me to conclude that mileage has no effect on the selling price. I have repeated this scatter graph with a different sample of data and there was still no correlation.

Price Depreciation for Age & Mileage  This student written piece of work is one of many that can be found in our GCSE Gary's (and other) Car Sales section.

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