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 Problem in Mean and Standard deviation calculation		  New Topic  Reply to Topic
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dhiman95

India
1 Posts
Posted - 07/18/2021 :  2:03:04 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:
Sir, I have a problem with calculating the mean and standard deviation of a lognormal distribution.
In this distribution, I got a mean of 64.6 and a standard deviation of 40.44, but I think this standard deviation is not right. Can you please help me to sort out this problem?

Echo_Chu

China
Posts
Posted - 07/19/2021 :  05:48:21 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

The standard deviation of lognormal is created with equation in the page below
https://www.originlab.com/doc/Origin-Help/LogNormal-FitFunc

I am not quite sure why you feel the result is not right?

Echo
OriginLab Technical Support
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