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Aide Scilab >> Statistiques > cmoment

# cmoment

central moments of all orders

### Calling Sequence

mom=cmoment(x,ord)
mom=cmoment(x,ord,'r') or mom=cmoment(x,ord,1)
mom=cmoment(x,ord,'c') or mom=cmoment(x,ord,2)

### Arguments

x

real or complex vector or matrix

ord

positive integer

### Description

cmoment(x,ord) is the central moment or order ord of the elements of x. If a third argument of type string 'r' (or 1) or 'c' (or 2) is used, we get in the first case, a row vector mom such that mom(j) contains the central moment of order ord of the j column of x. cmoment(x,ord,'c') is used in the same way for the central moments in the rows.

### References

Wonacott, T.H. & Wonacott, R.J.; Introductory Statistics, J.Wiley & Sons, 1990.

### Examples

x=[0.2113249 0.0002211 0.6653811;
0.7560439 0.3303271 0.6283918]
mom=cmoment(x,3)
mom=cmoment(x,2,'r')
mom=cmoment(x,3,'c')

• sum — somme des éléments d'un tableau.
• median — médiane des termes d'une matrice
• st_deviation — écart-type des termes d'une matrice
• mean — mean (row mean, column mean) of vector/matrix entries
• meanf — weighted mean of a vector or a matrix
• moment — non central moments of all orders
• nanmean — mean (ignoring Nan's)
• nanmeanf — mean (ignoring Nan's) with a given frequency.
• stdev
• stdevf — standard deviation
• variance — variance of the values of a vector or matrix
• variancef — standard deviation of the values of a vector or matrix
• nanstdev — standard deviation (ignoring the NANs).

### Authors

Carlos Klimann

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