Standard Deviation and Coefficient of Variation

[@TheOrganicChemistryTutor]

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Please do you have a video about coefficient of group data?

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Can you kindly make a video for coefficient of variation for group data? Please 🙏🙏

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[@feivelwilliamaudiestevianto]

Excuse me Organic chemistry tutor, i have a question, how do you calculate the Standard Deviation of a Population using the Standard Deviations of samples? because i am currently unable to understand it

[@ikvardag3170]

There is own standard deviation formula for calculating Standard deviation of a population, why going on with sample formula at first place?

[@thundercow2082]

Please make videos about sets, im struggling so bad

[@komolafedeborah2262]

If the data for Hb % levels of blood samples collected from individuals were subjected to analysis and Sum of fx= 8970, Sum of f = 110, Sum of f(x-xbar)square = 550. Calculate mean, mean deviation and standard deviation and coefficient of Variation. I have this question from my lecturer. Problem is, how can I calculate the mean deviation without the individual variables ? Being trying this but I've not been able to. Thank you.

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How is it 3.962? i got 3.898?

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7:29 i got 1.981 on my calcu😢

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