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•
The determination of the uncertainty of a result therefore
requires an analysis of the
distribution
of any influence quantity.
•
All components to the overall uncertainty are grouped into
two
different categories
according to
how the associated
probability distribution is being evaluated
:
More on the uncertainty concept:
Type A (evaluation of)
uncertainty:
Those components which
are evaluated by
statistical analysis of
repeated of observations
Type B (evaluation of)
uncertainty:
Those components which are
evaluated by any other
means
16
Both based on probability
distributions
NOT Random and
Systematic errors!