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Astron. Astrophys. 323, 399-414 (1997)

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Appendix A: calculating the standard deviation of sample standard deviations

For the sample [FORMULA] let

[EQUATION]

The sample standard deviation (s) is defined by

[EQUATION]

The standard deviation of sample standard deviations is defined by (Burington & May 1970)

[EQUATION]

with [FORMULA] the variance of the population given by the unbiased estimate [FORMULA], [FORMULA] and n the total number of points.

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© European Southern Observatory (ESO) 1997

Online publication: June 5, 1998

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