Symbolic notation for the standard in uncertainty

Thread Content

1 Symbol for standard uncertainty: u (lowercase plain). 2 Symbol for components of standard uncertainty: ui (u: lowercase plain, subscript in lowercase plain). 3 Symbol for relative standard uncertainty: ur or urel (u: lowercase plain, subscript in lowercase plain). 4 Symbol for combined standard uncertainty: uc (u: lowercase plain, subscript in lowercase plain). 5 Symbol for expanded uncertainty: U (uppercase italic). 6 Symbol for relative expanded uncertainty: Ur or Urel (U: uppercase italic, subscript in lowercase plain). 7 Symbol for expanded uncertainty when the specified coverage probability is p (lowercase italic): Up (U: uppercase italic, subscript in lowercase italic). 8 Symbol for coverage factor: k (lowercase italic). 9 Symbol for coverage factor when the specified coverage probability is p: kp (lowercase italic). 10 Symbol for coverage probability: p (lowercase italic). 11 Symbol for degrees of freedom: v. 12 Symbol for effective degrees of freedom of combined standard uncertainty: Veff