Robert A. Meyer asked what is / which software calculates
>(A) 5th Standard Deviation
>(B) 10th Standard Deviation
>(C) 25th Standard Deviation
>(D) 40'th Standard Deviation
and T.S. Lim answered,
> I think you're looking for PERCENTILES.
I would say that there actually a related thing in robust statistics, where the
standard deviation (or, better to say, a measure of dispersion) is estimated
according to the difference in the 5th and 95th percentiles, or 10th and 90th
percentiles, or another symmetric combination (percentile, or quantile, is the
argument of the CDF where the specified level is reached, be that 0.05, or 0.95,
or anything else between 0 and 1; in other words, inverse function to CDF), and
then this difference is scaled to match the standard deviation taken from normal
distribution (in the above cases, divided by 3.29 and 2.56, respectively). But I
think it can at best be met at a serious graduate course, so maybe you should
ask your daughter what she (or the instructor) actually means.
......Stanislav Kolenikov (7-095)-232-3613p -3739f
[EMAIL PROTECTED] http://giganda.komkon.org/~tacik/
..................Russian - European Center for Economic Policy
.................................................Moscow, Russia
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