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 …showed first 75 words of 4024 total…

…showed last 75 words of 4024 total…the error of around 1000, where as the each brand's formulae has 500 pounds of error. So I could conclude that each brands' model is much more accurate. So it is the best to use the model function formula for each brand to get the most accurate results. But the predicted price may come out slightly faulty, but it would still be much more accurate than using the universal formula for all of the brands.