Hello,
Can somebody please advise me on how to calculate geometric standard mean? Thanks.
Fahmida
Can somebody please advise me on how to calculate geometric standard mean? Thanks.
Fahmida
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help ameansRegards
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Attaullah Shah, PhD.
Professor of Finance, Institute of Management Sciences Peshawar, Pakistan
FinTechProfessor.com
https://asdocx.com
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For more flexibility, consider using asdocx which can send Stata outputs to MS Word, Excel, LaTeX, or HTML. -
Do you mean
geometric mean
or
geometric standard deviation?
Or if "geometric standard mean" is not either, please give us a reference and/or a definition.Comment
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Sorry, I actually meant Geometric mean and Geometric standard deviation. I need to calculate GM and GSD for a specific chemical for a specific population.
FahmidaComment
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why not just use the -ameans- command? it does not give SD but does give CI so, if you really need the SD, you could work back to it
added: note that the formula is given in the "methods and formulas" section of the pdf documentation; just type
and click on the blue link at the top of the help fileCode:help ameans
Comment
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Thanks for your reply. I have used the ameans command, and got the GM and CIs. I used the equation
for 95% CI. But I am wondering if it is okay to use this equation for GSD, or do I need to apply any special technique in this case? Please help me to get out of the confusion. Thanks.
Fahmida
Comment
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Where does your formula come from? Why not exponentiate the standard deviation of the logs?Comment
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I have got the answer. Thanks.Comment
Comment