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• Level: GCSE
• Subject: Maths
• Word count: 2363

# I have been given instructions to collect data for my GCSE statistics coursework and then to represent them by interpreting them using graphs and attributes, which I think influence the prices of a second hand car.

Extracts from this document...

Introduction

STATISTICS COURSWORK year 10

I have been given instructions to collect data for my GCSE statistics coursework and then to represent them by interpreting them using graphs and attributes, which I think influence the prices of a second hand car.  Below is my coursework flowchart that will show the steps I will take to complete my coursework.

## FLOWCHART

HYPOTHESIS

I think that the age, make, amount of owners will affect the price of the second hand cars. In the investigation, I will use several different types of charts and graphs to support and show my hypothesis is correct and to show if my predictions were incorrect, or correct. After I have investigated some of the attributes, I will then draw up another hypothesis and see what will happen at the second half of my investigation. I think that if things do change, the tax amount and mileage may affect the price.

## DATA COLLECTION

There are many types of data, to obtain it we must observe and measure something. This is known as a variable, there are two types of variables:

-Quantitative variables, which have NUMERICAL observations or measurements.

-Qualitative variables, which have NON NUMBERICAL observations or measurements.

The other types of data I may consider using are

Continuous

Middle

Below is a line graph showing the first 20 cars and their make along with the price it is second hand.

The results have helped support my hypothesis incredibly, when looking at the graph you can see that that, the second dot, the Mercedes, is way above the rest, as we know Mercedes is a very well known make, so looking at this helps us identify that the better the make, the more you will have to pay.

## This is a look at how the amount of owners can affect the price

 Owners Price second hand Make 1 7999 Ford 1 10999 Mercedes 1 7999 Vauxhall 2 6595 Vauxhall 1 3999 Nissan 1 4999 Renault 1 5999 Mitsubushi 1 6999 Rover 2 6999 Renault 2 7499 Vauxhall 2 3495 BMW 2 6499 Vauxhall 3 5995 Fiat 1 4995 Rover 1 3995 Mitsubushi 3 3795 Fiat 1 5999 Mitsubushi 2 1995 Fiat 1 3795 Rover

In my hypothesis I stated that the amount of owners would affect the price, the more owners, the less the price will be. When looking at the chart above, you can see that the cars with 3 owners, the two fiats are very low in price, but comparing this to the others that have one, they are more. However, as I look at the mitsubushi, it is only a couple of hundred pounds more and it as only had one owner, this has confused me and my hypothesis is on 50% correct.

Conclusion

VAUXHALL

Above you can see that the prices of the 5 Vauxhall cars when new were in the same price range, but looking at the second hand prices, the prices have decreased by a huge margin, this may prove that the lower class cars prices decrease larger than the more high class cars.

MERCEDES

Now from the picture on the previous page, you can notice that the Mercedes is a very expensive make, and the second hand price have decreased from the new prices, but there is a less amount decreased. With the Vauxhall cars, you saw that the second hand priced halved, when you look at the Mercedes, you will see it has not halved, but it has decreased by a small amount. This can prove that the MAKE does indeed express the second hand price. So my hypothesis is correct.

FORD

Now you can see another change, the ford make is a highly used car but not considered to be at a high class, so this proved my hypothesis that the better the make,

I will now compare other makes and their prices to get a greater look at the comparison between prices.

Above you can see a great deal of difference, the better make Mercedes has a high second hand price than the ford, rover and Volkswagen when new, so this does prove my hypothesis again that make affects the price of a 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.

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