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Mathematics 8 Online
OpenStudy (anonymous):

I don't get Populations & Data Analysis.. Apparently there is different types of sampling.. and I don't get the point of any of them. I know about a biased and unbiased situation.. but that's about it. There is: -Volunteer Sampling -Convenience Sampling -Simple Random Sampling -Systematic Sampling -Stratified Sampling ^ I don't get ANY of these? Explain.. please.. :)

OpenStudy (anonymous):

...Any help? )=

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