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Ajuda Scilab >> Estatística > 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')

See Also

  • sum — soma (soma linha, soma coluna) de entradas de um vetor ou matriz
  • median — median (row median, column median,...) of vector/matrix/array entries
  • st_deviation — standard deviation (row or column-wise) of vector/matrix entries
  • 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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Last updated:
Wed Oct 05 12:11:45 CEST 2011