What does GUM stand for in the context of measurement uncertainty?

In the context of measurement uncertainty, GUM stands for the "Guide to the Expression of Uncertainty in Measurement." This document provides a comprehensive framework for evaluating and expressing uncertainties that arise in measurement processes. It outlines the principles and methodologies for quantifying uncertainty, emphasizing the importance of a systematic and rigorous approach to ensure reliable and accurate measurements. The guide helps practitioners in various fields standardize their methods of assessing uncertainty, making it critical for quality assurance and compliance with international standards in measurements and testing. Recognizing the role of uncertainty is essential for maintaining the integrity of data and making informed decisions based on those measurements.