Dear Loet,
Variance is a parameter which can be computed for the distribution of
any real random variable having a finite moment of order 2.
It includes Normal, Binomial, Poisson, Exponential, any distribution
with bounded support, etc.
However, some statistical tests about the variance assume normality or
asymptotic normality.
Or may I have not understand you.
Best regards,

2015-09-12 9:22 GMT+02:00 Loet Leydesdorff <>:
. . .
> ...
> but variance measurement assumes normality of the distribution.
> ...
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