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Hypothesis 1 The price of a second hand car is affected by the size of the engine. I predict the larger the engine, the higher the price the car will be second hand. Car Price Second Hand Engine Size Mercedes A140 Classic 10999 1.4 Mitsubishi Carisma GDI 5999 1.8 Fiat Bravo 3495 1.4 Fiat Cinquecento 1995 0.9 Ford Fiesta 1050 1.1 Citroen Debut 1495 0.95 Ford Fiesta LX 1995 1.1 Nissan Micra 1595 1.1 Daewoo Lanos 4395 1.4 Lexus LS400 6250 4 Fiat Bravo 6795 1.2 Peugeot 206 7500 1.1 Mercedes Elegance 17500 2 Suzuki Vitara 2995 1.6 Ford Mondeo 7995 2 Nissan Primera 2574 2 Peugeot 306 3995 1.9 Rover Metro 1995 1.1 Ford Escort 2995 1.3 Fiat Uno 1495 1 From the results of my scatter graph, I can prove my hypothesis to be correct. The graph has a slight positive correlation, showing that as the engine size gets bigger, so does the second hand price. The line of best fit is a method of sharing the general rule for the relationship of engine size and price as a straight line showing that there is a slight positive correlation. However, although this is the case the relationship between them is not directly proportional, that is to say that engine size and...

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