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Sampling Data I am choosing a pupil to represent our school by their grades; I need to find out which sex obtains better grades so I can make my choice. My hypothesis is: 'Girls obtain better grades than boys' I have been given some data of some student's CATs and SATs results and by taking different types of samples of the data I will find out if girls obtain better grades than boys. Sampling There are four different types of sampling that can be used. These are: Systematic Sampling This is where there is a systematic way of choosing the sample, e.g. every 10th item will be sampled. Attribute Sampling This is where a sample is taken by choosing the sample by using unrelated attribute, e.g. to sample every person who's birthday is in the first two months. Stratified Sampling This is where a sample is taken according to what the population consists of, e.g. if there is 200 girls and...

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