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Справка Scilab >> Statistics > Measures of Shape > cmoment

cmoment

central moments of all orders

Syntax

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 — сумма элементов массива
  • median — median (row median, column median,...) of vector/matrix/array entries
  • stdev — standard deviation (row orcolumn-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 — standard deviation (row orcolumn-wise) of vector/matrix entries
  • stdevf — standard deviation
  • variance — variance (and mean) of a vector or matrix (or hypermatrix) of real or complex numbers
  • variancef — variance (and mean) of a vector or matrix of frequency-weighted real or complex numbers
  • nanstdev — standard deviation (ignoring the NANs).
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Last updated:
Tue Feb 14 15:13:25 CET 2017