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YEAR 10 - LEAVES PROJECT Hypotheses: * As the length increases so will the width. * The length and width will be greater in 2002 than 2001. * The spread of the length and width will be great in 2002 than in 2001. * The length and width of the leaves will follow a normal to almost normal distribution. * The length of leaf for which 10% of the leaves are longer will be greater in 2002. From the data gathered on leaves, attached overleaf, I performed statistical techniques to attempt to prove my hypotheses. Factors Effecting Results: Time of year From the data given we cannot be sure if the length and width of the leaves were collected at the same time of year each year. Leaves collected at the beginning of the year would not yet have finished growing whereas leaves collected towards the end of year (i.e. autumn) would be at their largest. Type of tree We do not...

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