Vito Ricci wrote:
Hi,
in which R-package I could find skewness and kurtosis measures for a distribution?
Both funcions are in package "e1071".
Uwe Ligges
I built some functions:
gamma1<-function(x) { m=mean(x) n=length(x) s=sqrt(var(x)) m3=sum((x-m)^3)/n g1=m3/(s^3) return(g1) }
skewness<-function(x) { m=mean(x) me=median(x) s=sqrt(var(x)) sk=(m-me)/s return(sk) }
bowley<-function(x) { q<-as.vector(quantile(x,prob=c(.25,.50,.75))) b=(q[3]+q[1]-2*q[2])/(q[3]-q[2]) return(b) }
b3<-function(x) { m=mean(x) me=median(x) n=length(x) d=sum(abs(x-me))/n b=(m-me)/d return(b) }
but I'm looking for some already included in a package.
Thanks in advance. Best Vito
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