What exactly do you mean by "variation"? As I understand it, this term is a broad term for all kinds of different "spread measures" (like quantile range or standard deviation). Do you mean the Coefficient of Variation? If you found out how to compute the mean and the std.dev., it is straightforward to calculate it.....

Adel ESSAFI schrieb:
Hi list
I am a new user of R. I ask for some "beginner" question

I am searching if there is any function that computes the variation of some
discrete values of a vector (mean() and sd() exists, but i have not find
variation).

Thanks in advance

Adel


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