Uncertainty Pro
Linearity
R&R Test
Thermal Expansion
Effective DOF
Measurement Uncertainty
Student T K Factor
Measurement Capability
Guard Band
Save / Load
Inputs
Number of points
Reset defaults
Edit the table values directly.
Computed (based on differences: As-Found − Reference)
Degrees of Freedom
Copy to Measurement Uncertainty
Send to Effective DOF
Inputs
Paste numbers (comma/space/newline; decimal point or comma are OK).
Test A (≈30 runs)
-0.5605 -0.2302 1.5587 0.0705 0.1293 1.7151 0.4609 -1.2651 -0.6869 -0.4457 1.2241 0.3598 0.4008 0.1107 -0.5558 1.7869 0.4979 -1.9666 0.7014 -0.4728 -1.0678 -0.218 -1.026 -0.7289 -0.625 -1.6867 0.8378 0.1534 -1.1381 1.2538
Test B (≈30 runs)
-1.3435 0.6218 0.8009 -1.3889 -0.7144 -0.3241 0.6906 0.2505 1.0074 0.5732 -0.9158 1.3111 0.9887 1.6539 -1.4408 1.9474 1.7369 0.3875 2.28 1.5379 -0.4746 -1.7173 -1.4268 0.2082 -0.0358 1.1343 -0.4629 -0.3284 1.4845 -1.0894
Reference Standard Measurement
R&R Components
Means
Degrees of Freedom
Copy to Measurement Uncertainty (Rep + Reprod only)
Send to Effective DOF
Length (mm)
ΔT (°C)
CTE (K⁻¹)
Compute
Paste components (name sd df):
Load
Template CSV
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Effective ν_eff:
Input Uncertainty Components
Calibration
Cal. Dist.
normal_2s
normal_1s
rectangular
triangular
u-shaped
Repeatability
Rep. Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Reproducibility
Reprod. Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Bias (from Linearity)
Bias Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Linearity (from Linearity)
Linearity Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Resolution
Resolution Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Env. Temp. Change
Env. Dist.
normal_1s
normal_2s
rectangular
triangular
u-shaped
Results
Degrees of Freedom (ν)
Confidence Level
80%
90%
95%
99%
99.9%
Interval
Two-sided
One-sided
Combined Standard Uncertainty (u_c)
Outputs
k is the Student-t multiplier for the chosen confidence level and ν.
U = k × u_c gives the expanded uncertainty.
Report as: result ± U, with k and ν documented.
Expanded Uncertainty
Measurement Result
Low Limit
High Limit
Gauge Resolution
Histogram: 10000 Monte-Carlo draws (k=2). TUR formula: ILAC P14. RE% and QMP criteria follow VDA-5.
Inputs
Nominal
Tolerance (±)
Expanded Uncertainty U (k≈2)
Sample points on axis
Decision rule: Accept if measured value within [LSL+U, USL−U]; Reject if ≤ LSL−U or ≥ USL+U; otherwise Guard band.
Computed Limits
Project name
This name is used for the downloaded filename.
Save
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Load
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Loading will overwrite the current inputs and tables in this session.
Project I/O
Save: Exports all inputs from every tab and the Effective DOF table.
Load: Restores those inputs and table values.
No database required; files live on the user’s computer.