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Investigating the relationship between the height and arm span of year 10 pupils and the spread of height of boys compared with girls.  

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Intro: I will be investigating the relationship between the height and arm span of year 10 pupils and the spread of height of boys compared with girls. Hypothesis: I believe that there will be a relationship between a persons height and arm span and as one grows in height arm span increases. Also I predict that there will be a greater variation in height in the boys compared with girls. * For relationship arm span V height I will draw a scatter diagram for my sample of 60 and compare it with the scatter graph for the population. I will calculate the mean arm span and height for my sample and compare it with the mean of the population. By doing this I shall see weather or not my sample is a good representation of the population. * For heights or arm span of boys and girls separately I will group the...

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