"J. Williams" wrote:
>
> A geometic mean is used in the computation of index nos., growth
> situations in biology and population, increments of money at compound
> interest, and averaging percentages. It is less affected by extreme
> values in a distribution.
More accurately - it is less affected by extreme *high* values
in a distribution. It is more affected by extreme *low* values - for
instance, a missing datum coded as a 0 and not filtered out before
calculuation will take the whole shebang to 0, while a negative value
may cause the computer to crash.
-Robert Dawson
.
.
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