• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
• Level: GCSE
• Subject: Maths
• Word count: 1434

Car Prices Coursework

Extracts from this document...

Introduction

Car Prices Coursework

In the near future I am going to be looking to buy car to get around in either when I leave school or when I am in the Sixth form.  I am a bit confused about how car prices work and if they go down more due to their age or to the amount of mileage there is on the clock or any other reasons.  I have set myself the task of investigating car prices.

My Hypothesis’ are:

1. The higher the mileage the cheaper the car.
2. The older the car the cheaper it is.
3. The car model effects the price a lot.

I considered where I should take the data from. I thought a bit and I was dicing between doing primary or secondary sampling, finally I choose to use secondary data because I felt that if I had chose to do primary sampling I could have run into unforeseeable problems in the future.

The next thing I had to decide was where I was going to take my data from. I first instinct was to take it from the local newspaper in the car adverts section, but then I thought that might be a little biased or wrong because I am only taking the data from one region and the same car might cost more in a different region.

Middle

I decided to use the formula Spearman’s Coefficient of Rank. This formula is good to show correlation without drawing a graph and is very good as it ranks the data and sorts it.

I ranked the Data according to the mileage then I ranked the price. I performed the calculation and my end result confirmed my suspicions. The Spearman’s coefficient was -0.275. The closer to zero the answer is the weaker the correlation is. By this answer it shows the correlation is very weak and it seems that the age doesn’t have to do much with the price.

I was very surprised that the mileage didn’t have much to do with the price, I am going to investigate other areas that might tell me what effects the price a lot.

As this Hypothesis has come to the fact that the mileage doesn’t have much of an effect on the price my second Hypothesis might be more helpful.

My second Hypothesis

I am now going to investigate if the age of the car has any effect on the price.

I believe that the cars age will have more effect than the mileage on the price and this investigation will turn out more positive towards my hypothesis.

Again I have started off by doing a scatter graph.

Conclusion

The same pattern with the mileage also happens. The prices overlap here, or if you look at it another way the mileage overlaps so the graph turns out the way it does and so does the standard deviation. I have marked on the graph where one graph would over lap the one preceding it.

This same pattern happens with the Mileage. As the graphs for Mileage against Price show, as you go up in lots of 10,000 miles the price varies a lot and the graphs over lap here as well. Again I have marked on the graph where it starts to over lap the one preceding it.

Evaluation

Now as I have analysed all the data my results seem inconclusive. None of the Standard Deviation and graphs have shown any indication of what affects the price the most. The only thing I can put my finger on after this investigation is that the make of car has the biggest affect. Because many of the Vauxhalls are more expensive that the other makes of cars. Also I if was to carry out this further I would investigate other areas such as the engine size, condition, type and the model of the car. I think these other factors together with the things like mileage age and make all together contribute to the price of the car.

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

Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Related GCSE Gary's (and other) Car Sales essays

1. CAR SALES MATHS COURSEWORK

I personally feel that the investigation was not sufficient enough to determine what affects the price but I feel that my results might have a slight similarity. As I predicted in my hypothesis I felt that age and mileage will be the most contributing factors to the price, and I proved this in my results.

2. used car coursework

It shows a negative correlation between used car price and age. From the graph I can say that as the age increases the used car price decreases. The equation of the line is: y = -824.32x + 9092.1 The gradient is -824.32 and this tells us that every time the

1. Used Cards - find which factors will influence the price of a second hand ...

Subsequent to this, I will add all of the squared numbers and then multiply by 6, to give me the value of the numerator. To work out the denominator I am going to square the sample size and then take 1 away.

2. Handling data Used car prices

To do the stratified sample I will need to pick a proportional amount of cars from each group in the same way I did for the first hypothesis. Again I want a sample of 30 cars, so therefore to work out how many cars need to be picked from each

1. Used second hand cars

This is obviously caused by their price when new. The graph also seems to produce a poor correlation due to the same reason. This graph also seems to produce the same result as the graph obtains through pilot survey. There is a stronger negative correlation between the age and second-hand price when considered together.

2. Maths Coursework - Used Cars

All the graphs have positive correlation, some strong (Fiat and Rover), and some weak (Vauxhall and Ford). All the graphs show some sort of positive correlation, which means that as the age increases, the percentage depreciation increases and thus the second hand price decreases.

1. Factors affecting price of Used Car

pick 13 random cars for ford and 10 random cars for Vauxhall and so on. The table below shows the results I got Make Model Make Model Make Model Make Model Rover 416i Ford Escort Vauxhall Cavalier Fiat Bravo Rover 214i Ford Fiesta Vauxhall Astra Fiat Cinquecento Rover 623GSi Ford

2. Used car prices

Hypothesis It is assumed that 'the older a car, the cheaper a car will cost'. It is so, due to the general public like to drive new cars and will not prefer old cars. New car also gives good performance.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to