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Investigating the statement "Boys are taller than girls." Introduction For my investigation I will be investigating the statement "Boys are taller than girls." Planning I will need to collect the year group, gender and height for each person in years 7 and 11 at Mayfield High School. I can find this information from the database the school provided. I have chosen this source of information, as it is reliable. I will use a sample size of total 120 so that is a sample size of about 60 per year group and 30 per year group per gender. This will be a fair sample as it considers a proportional number of people in each year so my results should show a similar variation in each year group therefore giving me better averages to work with. I will use this data to compare the difference in heights between boys and girls in each...

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