Compares the behaviour of
(individual) items and their averages,
aiming at computing confidence intervals
for μ and σ.
[This is based on the real case of samples of bags ('items') and
their total weights (leading to 'averages').]
The items are simulated from a Gaussian
(μ, σ) distribution.
Draws plots of f ('pdf'),
and F ('cdf') of: the items and their averages of n;
and the items' variances.
Remaining: CIs from items vs. from averages. | 
