What is effective degrees of freedom
Short answer: Effective degrees of freedom (υeff) is an approximation of the degrees of freedom associated with the combined standard uncertainty. It is calculated using the Welch-Satterthwaite formula and used to quantify the reliability of the combined uncertainty estimate. According the JCGM 100:2008, it is calculated with the Welch-Satterthwaite formula and used with the Student’s […]


