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Introduction For my investigation I am using data from a simulated school called Mayfield High School. This is a mixed secondary school with 1183 people, split into 604 boys and 579 girls. There are five-year groups, from 7 to 11. This contains many different records, including, first name, surname, height, weight, age (decimal, years and months), month of birth, sex, hand, favourite sport subject and TV program, hours of TV, IQ, distance between home and school, means of travel to school, and Ks2 and Ks3 results. I have chosen to investigate the relationship between height and weight, because it is quite probable that they influence each other. Here are my hypotheses, which are all related to height, weight or both. : - 1. There will be a positive correlation between height and weight. 2. The spread of boys' height will be larger than the spread of girls' height. 3. The average boys' weight will...

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