• 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
4. 4
4
5. 5
5
6. 6
6
7. 7
7
8. 8
8
9. 9
9
10. 10
10
11. 11
11

# In this coursework I am going to investigate what influences the prices of a second hand car.

Extracts from this document...

Introduction

Introduction

In this coursework I am going to investigate what influences the prices of a second hand car. In order to be successful I will find out how the engine of a car, age of a car, price of a car and the colour of a hand car will affect the second hand price. There are 25 makes of cars, but I will only look 8 makes, that come up a lot, to give me an idea of what is influencing the second hand price of the cars. The makes of cars are as follows:

Ford

Vauxhall

Peugot

Volkswagen

Rover

Fiat

Nissan

Renault

Firstly I will start by looking at the ages of all the cars above and see how it affects the

Middle

This graph is a negative correlation and shows that as the age of the Peugot car increases the second hand price goes down

This graph is positive correlation and shows that as the engine size increases, the second hand price goes up by a small amount.

Volkswagen

This graph is a negative correlation and shows that as the age of the Volkswagen car increases the second hand price goes down

This graph is positive correlation and shows that as the engine size increases, the second hand price goes up by a small fraction.

Rover

This graph is a negative correlation and shows that as the age of the rover car increases the second hand price goes down

This

Conclusion

Standard deviation

I am going to use standard deviation because it measures the spread of the data about the mean valve. It is useful in comparing sets of data which may have the mean but a different range. For example, the mean of the following two is the same: 15, 15,15,14,16 and 2.7.14.22.30. However, the second is cleverly more spread out. If a set has a low standard deviation, the values are not spread out too much.

Standard deviation will give me me a more detailed picture of the way in which the data is dispersed about the mean as the centre of the distribution. Its main use is to compare two sets of data.

This student written piece of work is one of many that can be found in our AS and A Level Probability & Statistics 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 AS and A Level Probability & Statistics essays

1. ## GCSE Mathematics Coursework: Statistics Project

Comparing the Box and Whisker Diagrams * Girls, who on average weigh less than the boys, typically watch more television, further proving that my original hypothesis is incorrect in these circumstances. * The range of amounts of television watched by girls and boys is almost identical.

2. ## Statistics coursework

Collecting data These are my calculations when working out the proportion of data I should take from each strata using stratified sampling: Proportion of strata to be taken= (Number in strata/population) x sample size Strata Number of students/ Number in strata Year 7 girls 131 Year 7 boys 151 Year

1. ## Statistics. The purpose of this coursework is to investigate the comparative relationships between the ...

in my investigation, and the data provided to me may already be ordered in some way. Thus, I have chosen random sampling in my investigation. I have reordered the data into a random mix in Excel. I then deleted half of it, as each datum has equal probability of being filtered into the second, as opposed to the second half.

2. ## DATA HANDLING COURSEWORK

I will round my calculations for heights and weights to 0d.p. because it is illogical to process information that is more accurate than the data it is based on, although this will make my predictions less accurate. I will use scatter graphs to analyse the type of correlation there is between height and weight for each year group and gender.

1. ## Statistics Coursework

the age of the students and their attendance figures at school or there is no relationship at all. However, the students' appreciation of the importance of their attendance figures does and this is why (in my opinion) the attendance figures vary between students.

2. ## Intermediate Maths Driving Test Coursework

The 'Number of lesson' mean is almost the same as the one in the preliminary analysis which was 23.02917, same goes for the range, and it is only two numbers off the previous one which was 36. In the 'Number of mistakes' the mean and range is also almost the

1. ## Data Analysis of American House Price

By comparing the values of the range and inter-quartile range in relation with the standard deviation, it is clear that the houses with a pool have a higher dispersion in price and the prices are more spread out than houses without a pool.

2. ## Used Cars - What main factor that affects the price of a second hand ...

Mileage A car with a high mileage will sell for a lower price compared to a similar car with a low mileage because a high mileage means more wear on the engine which will reduce the performance and reliability of the car.

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