... because of this I repeated my scatter graphs for every hypothesis. I have included both sets of graphs in my work. Hypothesis 1 The higher the mileage the lower the value of the car. I expect my graphs to show that the greater the mileage the lower the value of the car. To investigate this hypothesis I used a bar chart and scatter graph (see graphs) From my results I can see that the number of owners does affect the price of a car. I worked out the mean for my results by adding up my used car price data and my number of owners data and then adding the two figures together and dividing the final total by 30 as I have 30 cars overall, I worked out the mean is 6015.2 Here is my working out: Price When Second Hand (£) Owners 5999 1 6999 1 3995 1 1000 4 850 3 3695 3 1195 3 1995 1 1495 3 6995 2 1295 1 1595 1 2595 1 4700 1 37995 1 6795 1 5795 1 6995 2 14999 1 13500 1 3995 2 7995 1 4976 2 3495 2 1664 3 2574 2 2497 2 14735 2 2995 2 4995 2 = 180403 = 53 180403 + 53 = 180456 180456 / 30 = 6015.2 ...

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