Introduction to Measurement Uncertainty (EMU 101)

This course is a suitable introduction for both calibration and testing laboratory participants, focusing on the concepts and mathematics of the measurement uncertainty evaluation process. The participant will gain an understanding of the statistical techniques required to estimate measurement uncertainty, and will practice those skills to create basic uncertainty budgets.


Course Content

  •  Introduction:
    • The requirement for uncertainty estimates.
    • Uncertainty References, Definitions, The GUM; and other more user-friendly material.
  •     Mathematics:
    • Significant digits, scientific notation, and units conversion.
    • Basic statistics used in the GUM.
  •     Estimating Uncertainties:
    • Type A and Type B methods.
    • Distributions, confidence levels, standard deviation.
    • Distributions and Applying corrections.
    • Outside limit estimates.
    • How many measurements (sample size).
    • Combination of uncertainties.
    • Correlated vs. uncorrelated.
    • Expanded uncertainty; and confidence intervals.


  • Familiarity with spreadsheet statistical functions as well as formula manipulation



The participant will need to bring a laptop computer with Microsoft Excel or similar spreadsheet installed.


Target Attendees

This course is designed for personnel working in calibration, metrology, testing or other measurement fields.

PLEASE NOTE: This class is suitable for those laboratories whose tests and/or calibrations fall within the category of Type IV or V in accordance with A2LA's P103 - Policy on Estimating Measurement Uncertainty for Testing Laboratories.

Learning Outcomes

After successful completion of the course, the participant will be able to:

1.    Identify, explain, and recognize key terms, definitions, and reference sources related to measurement uncertainty;
2.    Understand and Implement basic statistics;
3.    Describe and apply various statistical and non-statistical distributions, and
4.    Illustrate simple uncertainty budgets

CEUs Awarded

0.8 CEUs Awarded*

Presentation Style

Lecture, discussion, and group exercises.


The Guide to the Expression of Uncertainty in Measurement (GUM).


*American Association for Laboratory Accreditation (A2LA) is accredited by the International Association for Continuing Education and Training (IACET) and is authorized to issue the IACET CEU.



October 8, 2018
MicroTek Dallas
5430 Lyndon B Johnson Fwy Three Lincoln Centre, Suite 300
Dallas, TX 75240
8:00 AM – 4:30 PM

Phone: 214-615-0634

October 23, 2018
San Diego Training & Conference
450 B Street, Suite 650
San Diego , CA 92101
8:00 AM – 4:30 PM

November 13, 2018
Las Vegas , NV
8:00 AM – 4:30 PM

Additional Location Info:

Venue to be announced.

December 10, 2018
Cypress Center One, 5404 Cypress Center Drive, Suite #125
Tampa, FL 33609-1043
8:00 AM – 4:30 PM

December 19, 2018
5202 Presidents Ct.
Frederick, MD 21703
9:00 AM – 4:30 PM

Additional Location Info:

If you would like the A2LA corporate rate when booking your stay please contact

PLEASE NOTE: Registration for public training courses will close 7 days prior to the start date.
A2LA can offer on-site training at your facility. For additional information about this option, please submit your request here.