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Maths Coursework: Mayfield High School PLANNING Aim: To investigate the difference in height of both sexes, comparing years 7 and 11. * How will the average heights differ between years and sexes? * Will the girls have a larger range of heights in year 7 than the boys and why? * Will the boys have a larger range of heights in year 11 and why? * How will the standard deviation differ between years? Hypothesis: I expect that: a) The average height for the boys in year 7 is going to be slightly smaller than that of the girls, though I don't expect the margin to be a big one. b) I also believe that the boy's heights in year 11 are going to be larger than the girls in year 11 (though I expect this margin to be larger than the difference in year 7.) c) I expect the standard deviation for the heights of girls in year...

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