Investigating the Factors that Affect the Price of a Second Hand Car

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Investigating the Factors that Affect the Price of a Second Hand Car

Introduction

I am going to test which factors affect the price of a second hand car

using a variety of different statistical techniques. From what I

discover using these techniques I will conclude which factors are the

most important.

I will examine only cars within the reach of a normal family, i.e. not

luxury cars. I will also exclude classic cars as these are unlikely to

perform like normal second hand cars.

Using a given set of data on the prices paid for second hand cars, I

chose ten of these factors and did a survey of the classÂ’ parents to

make initial assumptions of which factors they were most influenced by

when buying a second hand car. The survey asked them to choose the 3

most important and 3 least important from a list of ten. Using the

results of this data, shown on page Â… , I selected three hypotheses to

test. I will test these using a given data set. If I need to take more

samples to test the hypotheses more conclusively, I will obtain data

from other sources.

The types of information in the column represent the factors which can

easily be defined when buying a car, even though there may be other

ones that affect a person buying a car, even if they cannot be

measured. An example is their opinion of the person selling them the

car, as this will affect them a lot even though it is not possible to

use this with the data sample.

Hypothesis 1

The greater the original price of a car the greater its second hand

price will be.

I that there will be a link between these two factors because the

original price of the car will be a reflection of the attributes of

the car, so the second hand price should only change in price as a

result of what has happened to it since it was new (e.g. age, mileage,

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