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GCSE Statistics CA help

Ok, I'm still on data collection but I've done my first hypothesis. What should I should do for my next two hypotheses? My population size is 100 and the method of sampling I used in my first hypothesis was random sampling and it was a sample of size of 50. My next two hypotheses are:

The price of diesel cars will have a wider distribution than the price of petrol cars
The variation of petrol car's prices will be lower than that of diesel cars.
Apart from collecting prices of petrol and diesel cars for each one using different types of sampling, I don't think there's anything else I can do. Also, I can't think of any other ways of presenting the data other than tables. I'm aiming for at least 6/8.

Thank you!

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