# Method A

Document Sample

```					Method A - statistics from a series of independent repeated measurements.
Take a series of measurements and enter them in the table below. The measurement statistics are
shown below the table where the "2 sigma %" represents the k=2 uncertainty with 95% confidence.

Table of samples (enter as many samples as available)

Mean       Std Dev       Max        Min
#DIV/0!     #DIV/0!             0          0                    1
0.9
1 sigma %     #DIV/0!                                            0.8
2 sigma %     #DIV/0!
0.7
Frequency

0.6
Ampl bin      Freq
0              0                                        0.5
0              0                                        0.4
0              0                                        0.3
0              0                                        0.2
0              0
0.1
0              0
0              0                                         0
0              0                                              0   0.2   0.4       0.6    0.8
0              0                                                          Amplitude
0              0

mailto:info@mpiuk.co.uk                          http:\\www.mpiuk.co.uk
1
Measurement uncertainty budget calculator
For each source of uncertainty enter either its Nominal value and +/- uncertainty OR the % uncertainty.
Select the appropriate Probablility Distribution type from the drop down list.
The combined uncertainty is shown below. (See the Example sheet)

Enter either Nom and +/- or single %
Nominal
Source of uncertainty                                  Value +/-   Value +/- %
value

Combined standard uncertainty                   1000          0.00000         0.00%

Expanded uncertainty (k=2)                    1000          0.00000         0.00%

mailto:info@mpiuk.co.uk                              http:\\www.mpiuk.co.uk
nty OR the % uncertainty.

Probability               Standard
Divisor
distribution             uncertainty

0

0
Measurement uncertainty budget calculator
Example showing a simple example of using a DVM as a secondary standard to check
another measurement device.

Enter either Nom and +/- or single %
Nominal                                 Probability
Source of uncertainty                             Value +/-   Value +/- %
value                                  distribution
DVM amplitude specification                                          0.10%      Normal k=2
DVM resolution                    3000            1                      Normal k=2
UUT measurement result resolution            300           0.1                     Rectangular
Uncertainty of mean on 10 readings            20          0.016                    Normal k=1

Combined standard uncertainty               1          0.00097        0.10%

Expanded uncertainty (k=2)                1          0.00194        0.19%

mailto:info@mpiuk.co.uk                       http:\\www.mpiuk.co.uk
Standard
Divisor
uncertainty
2.00         0.0005
2.00     0.000166667
1.73      0.00019245
1.00     0.000790569

0.00096944

0.001938881

```
DOCUMENT INFO
Shared By:
Categories:
Stats:
 views: 6 posted: 9/4/2010 language: English pages: 6
How are you planning on using Docstoc?