Do Year 10 and Year 11 students from Mayfield High School who weigh less, watch less television than those with a higher weight?

The first 200 words of this essay...

Do Year 10 and Year 11 students from Mayfield High School who weigh less, watch less television than those with a higher weight?

In this piece of coursework I intend to investigate whether or not there is a correlation between the numbers of hours of TV a student watches on average each week and their weight. I expect that the more active students spend less time watching television and spend more time doing physical activities and therefore students who watch less television will weigh less. I expect that this correlation will be stronger with the Yr.10 students because they have more time to watch TV, and when they are not watching TV they have more time to focus on physical activities, whereas the Yr.11 students will have to concentrate on studying for their GCSE's, and will therefore watch less TV, but also have less time for physical activities. I will also examine the general distribution of both the values, and I will investigate the differences between the year groups, and whether there is an overall pattern between the amounts of TV that both of the year groups watch watch.

Why I am using a random stratified sample