3.0 | 1 rating Rate this file 19 downloads (last 30 days) File Size: 1.28 KB File ID: #3278

RelVar

17 Apr 2003 (Updated 12 Jan 2010)

Code covered by the BSD License

Descriptive statistic to characterize & compare data sets.

File Information
Description	Whereas standard deviation and variance are measures of absolute variance, the coefficient of variation is a measure of relative variance. This is generally useful to compare several data sets. It can also be used as a simple quality indicator. The definition used here is ratio of standard deviation to mean value expressed as percentage. For more information on descriptive statistics, check out the online documentation for the Statistics Toolbox at http://www.mathworks.com/access/helpdesk/help/toolbox/stats/descript.shtml. This is just a one-line utility but I use it often because it's convenient - saves typing.
MATLAB release	MATLAB 6.5 (R13)
Zip File Content
Other Files	license.txt, RelVar.m

Tags for This File
Everyone's Tags	coefficient of variation, measures, probability, relative variance, statistics
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Comments and Ratings (1)
19 Aug 2008	Ronald Van Steenweghen	As used with time series, not surprisingly a NaN enters the dataset. Therefore I suggest to use the replace this line of code by: cv = nanstd(x(:))/nanmean(x(:))*100; This will return a result even if NaN's are included into the dataset.

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Updates
12 Jan 2010	copyright

Tag Activity for this File
Tag	Applied By	Date/Time
statistics	Robert Bemis	22 Oct 2008 07:00:01
probability	Robert Bemis	22 Oct 2008 07:00:01
relative variance	Robert Bemis	22 Oct 2008 07:00:01
coefficient of variation	Robert Bemis	22 Oct 2008 07:00:01
measures	Robert Bemis	22 Oct 2008 07:00:01

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