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# An Analysis of the Sales of Used Cars Using Various Variables

Maths Coursework Aim The aim of my investigation in this maths coursework is to investigate the used car sales I will need to investigate on these variables -The price of the cars -The age of the cars -The makes of the cars -The cost when new of the cars -The mileage of the cars -The engine sizes of the cars All the variables above are ratio variables Numbers are used except the makes of the cars because that one is special and its called nominal variables I will first try to find out any links between the current price of the car and the other variables such as age mileage car engine size and the make After finding links I will then attempt to progress the data in order to find out stronger links between variables and eventually I will try to find a general value or formula that can link them I will be drawing some graphs and then look for conclusions which can help me to find a general formula Hypothesis I predict that all of the variables will affect the Price of the cars in anyway because they all are very important So I think the Age will affect the price most because it is the most important variable of all and I think the Engine Size affects the least however all the variables will affect it in some ways Graphs 1 First of all I will be comparing the prices of all thirty-six cars with their age and the mileage I believe in terms of the general knowledge as the agemileage of the car increase the price of the cars should become cheaper For example if a car has been driven a lot it would surely have depreciated as it has been used a lot Therefore the age and the mileage will definitely affect the price of cars As you can see on

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