Student Teaching

摘要

While assisting laboratories with their measurement uncertainty estimation for ISO 17025 accreditation, I am frequently asked the question of when to use Student's t-distribution. Generally, the laboratory technicians and managers are proficient in their technical capabilities but struggle with the statistical part of the measurement uncertainty analysis. So just as a refresher, let's describe the use of t-statistics in layman's terms and show some examples of the measurement uncertainty application. First, a little background on Student's t-distribution, which was discovered by William S. Gosset in 1908. Gosset was a statistician employed by the Guinness & Co., which did not allow his discovery to be published under his own name. He therefore wrote under the pen name "Student."