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Unformatted text preview: curves the number of trails needs to be large. The 300 marble rolls data resembled the Gaussian curve, whereas the 50 marble rolls data did not. So, as the number of data points increases, the histogram becomes closer to the Gaussian curve. Furthermore, the size and shape of the marble used to roll down the board of nails changes the results of the experiment. Using a marble with a smaller radius increases the value of sigma. The smaller marble will roll faster and thus hit fewer nails, and therefore, follow a more straight path. In analyzing the data, possible errors can be detected. The value obtained for x av in all cases was not 0. Zero is the correct average for a marble whose path is completely random. This error can be fixed if more samples for the data is taken. It could also be because the board which the marbles were rolled down was not level to the ground....
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- Spring '08