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Data Handling.
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| Submitted: Wed Nov 12 2003
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Maths Coursework: Data Handling In this investigation I am comparing body mass index (BMI) against average number of hours of TV watched a week to see what correlation (if any) there is. This is because it seems relevant to BMI (since the less exercise people do the heavier they are, thus the higher BMI). The aim will be to show the correlation, if one exists, clearly and prove it, taking into account and bad results or bias in the data. To do this, I will first look at the population (1200 people). I must have at least 5% for the results to be reliable and without bias, so I will take 240 people (5%) as the sample. I will take stratified samples, and work out each person's body mass index; this is done by dividing their weight in kilograms over their height squared in metres. The groups I will be...
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