# If I have just mean, median and standard deviation, can I derive the distribution curve in Excel?

If I have just mean, median and standard deviation, can I derive the distribution curve in Excel?
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Excel VBA DeveloperCommented:
No.

A distribution function is dependent on the order of the data.  You can have two sets of numbers with identical elements such that the mean, median, and standard deviation are exactly the same.  However, if one was ordered in an ascending manner and another in descending (or randomly ordered) the distribution curve - whether linear, logarithmic, exponential, polynomial, or whatever - would be different.

-Glenn
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Commented:
Yes it is possible.
A normal distribution is based upon the mean (AVERAGE) and the standard deviation (STDDEV.S).

Provided you are referring to a normal distribution (using NORMDIST) you can plot a normal distribution quite simply.

If you see the attached you can see this being plotted.
U--NORMDIST.xlsx
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Excel VBA DeveloperCommented:
As much as I hate to ask, are you sure my answer was the correct answer?  After I saw Steve's post, I realized that a normal distribution is a possible curve that can be calculated (even if the only arguments are the average/mean and standard deviation).

Regards,
-Glenn
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Author Commented:
I need to actually plot curves for what they are: meaning left or right skewed if the coefficient of skewedness is big enough (> abs(0.5) or > abs(1)). Coefficient of skewedness takes into account mean, median and standard deviation.
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