How to use stratified sampling
200.5 هزار بار بازدید -
12 سال پیش
-
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://www.3minutemaths.co.uk for real maths, tips and techniques.
"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://www.3minutemaths.co.uk for real maths, tips and techniques.
12 سال پیش
در تاریخ 1391/12/04 منتشر شده
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200,595
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