Manual Event (Session ID,DateTime,Event) = dgde63mp41d581uk231dr6302j 20240419134915 /communities/determine-sample-size-for-unknown-population/

Determine sample size for unknown population?

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Discussion thread: Services for People with Disabilities

Woody Miu

5 October 2019

Determine sample size for unknown population?

Hi everyone! Is there any standard/common formula for determining sample size for unknown population? We are developing a project targeted at disabled women with mental health in HONG KONG, but seems that the population data is not avalible. Thank you!

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Jason Jiang

21 February 2020

https://www.statisticshowto.datasciencecentral.com/probability-and-statistics/find-sample-size/#CI1

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Woody Miu

7 November 2019

Thank you so much for your reply!

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Dr. MEL

29 October 2019

Just because the number of women, the number of people with disability, and the number of people with mental health problems are all large, the number of women with disability and mental health problems should also be large. So, a simple guess is just the multiplicative product of three proportions, say (.5)(.05)(.05) = .00125. If the overall adult population is 5 million, then the target population will be 6,250.

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