RSDA (version 1.1)

sym.sd: Symbolic Standard Desviation

Description

Compute the symbolic standard desviation.

Usage

sym.sd(sym.var, method = 
           c("centers", "interval", "billard", "histogram"), na.rm = FALSE, ...)

Arguments

sym.var

The symbolic variable.

method

The method to be use.

na.rm

As in R sd function.

...

As in R sd function.

Value

• return a real number.

References

Billard L. and Diday E. (2006). Symbolic data analysis: Conceptual statistics and data mining. Wiley, Chichester.

Rodriguez, O. (2000). Classification et Modeles Lineaires en Analyse des Donnees Symboliques. Ph.D. Thesis, Paris IX-Dauphine University.

Examples

data(example3)
sym.data<-example3
sym.sd(sym.var(sym.data,1))
sym.sd(sym.var(sym.data,2))
sym.sd(sym.var(sym.data,6))
sym.sd(sym.var(sym.data,6),method='interval')
sym.sd(sym.var(sym.data,6),method='billard')
sym.sd(sym.var(sym.data,3),method='histogram')