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For my maths coursework on Mayfield high school I have chosen to investigate the relationship between height and weight of the students. I will be using random sampling to choose 30 boys and 30 girls from a total of 1183 students. I am using random sampling because there are too many students to analyse them all. I will be using the calculator to generate random numbers between 1 and 1183. This should give a fair group to analyse. However the calculator may give to many girls in year 11 or too many boys in year 7, and this would make it an unfair group from the whole school. If I already had the 30 boys and the calculator kept giving numbers of boys I would ignore it until I got a number for a girl. I will be randomly choosing 6 boys and 6 girls from each year since there...

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