Dose 2016

5.2 (5) If this probability distribution is not known and the only available

information is a sample of random realizations, then the best

estimate of the measurand is the mean value of the random

realizations.

(6) The corresponding standard uncertainty is the positive square root of

the estimate of the variance of the mean value .

(7) The combined uncertainty is given by the following formula:

2

N   ∂

f

∑

2

= +

x ⋅   ∂ 

u

u ( x )

c

i

i

1

i

=

(8) The expanded uncertainty is the product of the coverage factor

and standard uncertainty.

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