How to use stratified sampling
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YouTube3minutemaths
How to use stratified sampling
How to use stratified sampling - this is based on a grade 5 GCSE question: "Andrew is going to carry out a survey of these students. He uses a sample of 50 students, stratified by year group and gender. Work out the number of Year 13 girls that should be in the sample." I hope this helps and please add any comments below - thanks! Visit http ...
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