Investigate how the prices of used cars vary from new cars.

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USED CARS PRICES

PLAN

                I am going to investigate how the prices of used cars vary from new cars. I am going to sample all the cars that are two years of age and under and compare it with cars that are in the range of five to eight years old. I am going to compare two different cars makes with each other and I am also going to sample out all of the cars with the mileage of 70,000 and less and compare it the price of the cars with the mileage of more than 70,000.

        I will plot the prices of cars on different graphs, draw a line of best fit and compare it with the others. So I will have three different types of graphs that are going to be age against price, make against the price and mileage against the price.

         

I collected the following data for my coursework:

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Now I am going to sample out the cars that are 2 or less years of age, and compare them to the cars that are in the range of five to eight years old.

Below are the cars that are below the age of two:

Below is the graph showing the price against the age.

This graph shows a negative coloration, it shows that as the car gets older than the price goes down.

Below are the cars that are in the range ...

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