Computes the standard deviation, variance, and coefficients of variation values of a univariate or multivariate (vector) time series. Wire data to the Xt input to determine the polymorphic instance to use or manually select the instance.


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TSA Deviation and Variance Details

This VI calculates the standard deviation and variance values according to the following equations:

where m is the arithmetic mean, s² is variance, s is standard deviation, n is the number of time series Xt. w = n when weighting is set to Population and w = (n-1) when weighting is set to Sample.

This VI calculates the coefficients of variation according to the following equation:

Examples

Refer to the following VIs for examples of using the TSA Deviation and Variance VI:

  • Engine Knocking Monitor VI: labview\examples\Time Series Analysis\TSAApplications
  • Power Line Monitor VI: labview\examples\Time Series Analysis\TSAApplications
  • ARMA Prediction VI: labview\examples\Time Series Analysis\TSAGettingStarted
  • Series Statistical Analysis VI: labview\examples\Time Series Analysis\TSAGettingStarted