Stratified Sampling Maths Is Fun
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Survey 100 people in our town.
Stratified sampling maths is fun. If the groups are of different sizes the number of items selected from each group will be proportional to. The table shows the number of students who study each of these languages. Stratified sampling practice questions click here for questions. Each student studies one of greek or spanish or german or french.
Click here for answers. Then make sure our survey includes people from each group in proportion to how many there are in the whole population. Stratified sampling by separating the population into groups age groups genders etc called strata we can ensure that the number of people who will be sampled from each group is proportional to the number of people in that group overall. An inspector wants to look at the work of a stratified sample of 70 of these students.
Stratified sampling this is where we divide the population into groups by some characteristic such as age or occupation or gender. Maths revision video and notes on the topic of stratified sampling. September 5 2019 september 5 2019 corbettmaths. Typically for gcse higher and statistics.
A school has 650 students.
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