How to determine sample size for known population ?
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- Опубликовано: 12 июл 2021
- In this tutorial, I have explained how to calculate sample size for finite/known population using Cochran formula.
Cochran, W. G. (2007). Sampling techniques. John Wiley & Sons.
Tejada, J. J., & Punzalan, J. R. B. (2012). On the misuse of Slovin’s formula. The Philippine Statistician, 61(1), 129-136.
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Very good explanation... Thank you...
Greatly expanded Sir
Thank you very much
Very helpful
Wonderful and thanks for sharing
Sir can you share what should be the sample size for a pilot study
Do u hv make video for how to calculate the infinite population by cochran?
Hello sir, may I know the purpose of adding the size of non-responded sample? Hopefully you see my query here in your comment section. Thank you
Chochrans formula only apply for infinity population?
Thank you. But the first formula is not Chochrans'*formula. It is Yemanes'
Sir, suppose I have a survey questionnaire of 40 questions.And I want to know regarding the conditions of my study area where population is around 2.5 lakh.Can I use this formula to determine sample size?
Yes, if your population is known, then you can follow this method.
If total population is 5 lakh 78 thousand than what should be the sample size?
are you from Bangladesh? Your accent is very similar to the south east region of Bangladesh.
I am from West Bengal
What I don't get here is the FINAL SAMPLE SIZE... should be 383 minus 19... WHY? because of the Cochran's Sample Size Estimate, the result was 383...
For instance, you disseminated the survey to 383 and you estimated that non-response from 383 is at 5%... Your final sample size should be 364... ruclips.net/video/GW_Wh-iBZsk/видео.html&lc=UgzkgJlFvm-i4WwR27d4AaABAg.9m0qP0DZuQ59mJSnJdRQUw
Thank you for your question. But it is the minimum sample size, we can't take less than it. So we can consider 5% non responded samples.
@@DrJayantaDas I beg to disagree sir because formula Z Squared is the cochran’s sample size estimation formula already. That’s the minimum sample size.
The other formula is what we called CORRECTION formula, where we already have knowledge about the population
Sir, I got 1.97 upon solving (1-0.025). Is it okay to just use 1.96?
You should consider only 90, 95 and 99 CL
@@DrJayantaDas alright, sir. thanks for the reply.