836 / 1359
Q
p
s
w
k
k
k
k
N
)
M
*
M
(
D
− =
0
Relative
combined standard uncertainty:
If the quantity to be determined is obtained as a product of
factors:
Q
p
s
w
k
k
k
k
N
M
D
=
2
1
( )
( )
N
c w
i
w
i
i
u D
u x
D
x
=
= +
relative uncertainties