821 / 1359
Step 3:
Determine the
positive root of the estimate of the variance
of the mean value (
standard uncertainty
of the mean)
Type A evaluation:
=
−
−
=
+
=
N
k
ki
i
x x
NN
xs
u
1
2
,
2
)
(
)1 (
1
) (
√
|
|
821 / 1359
Step 3:
Determine the
positive root of the estimate of the variance
of the mean value (
standard uncertainty
of the mean)
Type A evaluation:
=
−
−
=
+
=
N
k
ki
i
x x
NN
xs
u
1
2
,
2
)
(
)1 (
1
) (
√