[R] weighted standard deviation

[Sundar Dorai-Raj]

Perhaps "cov.wt" will do what you want?

Schnitzler, Johannes wrote:
> Dear all,
> 
> is there an implemented function to compute a
> weighted standard deviation (-like weighted.mean-) in R ?
> 
> 
> Thank's a lot in advance
> 
> 
> Johannes Schnitzler
> 
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