UNCERTAINTY CALCULATION SHEET
S/N
1
2
3
4
5
6
7
8
9
10
11
12
Observations
Reading 1
Reading 2
Reading 3
Reading 4
Reading 5
Reading 6
Reading 7
Reading 8
Reading 9
Reading 10
Average
SD (r)
Analyst-1 (%)
98.13
98.10
98.12
98.22
98.26
98.28
98.33
98.27
98.09
98.22
98.20
0.0856
Analyst-2 (%)
98.27
98.03
98.31
98.34
98.19
98.29
98.25
98.15
98.02
98.34
98.22
0.1188
Uncertainty of Repeatability - SD (r)
Uncertainty of Reproducibility - SD (a)
Average from - MAX SD (r)
Average from - SD (a)
SD (a) (%)
0.0990
0.0495
0.1344
0.0849
0.0495
0.0071
0.0566
0.0849
0.0495
0.0849
0.07
-
Notes
0.1188
0.0700
98.22
98.21
UNCERTAINTY MEASUREMENT (Budget)
Uncertainty
Unit
0.1188
0.0700
0.0100
0.0100
0.0600
0.0600
1.0000
%
%
g
g
ml
ml
%
K Factor
(Where
Applicable)
1
1
2
2
1.73
1.73
2
Combined Uncertainty (Uc)
Confidence Level (K)
Expanded Uncertainty (Ue)
0.1209
2
0.2419
@
=
@
68 % CL
95% CL
95% CL
Unit Uncertainty
Experimental Average
0.00242
S/N
1
2
3
4
5
6
8
Sources of Uncertainty
Repeatability
Reproducibility
Analytical Balance
Analytical Balance
Volumetric Flask
Volumetric Flask
HPLC
Uncertainty of Experimental
Value
98.22
0.24
%
Uncertainty
Contribution
Average or
Value
0.1188
0.0700
0.0050
0.0050
0.0347
0.0347
0.0247
98.22
98.22
10.00
10.00
50.00
50.00
98.22
Relative
Uncertainty
(%)
0.0012
0.0007
0.0500
0.0500
0.0694
0.0694
0.0003
Square of
Values
1.46379E-06
5.07983E-07
0.0025
0.0025
0.004811387
0.004811387
6.32416E-08