TY - JOUR A1 - Hässelbarth, Werner A1 - Bremser, Wolfram T1 - Correlation between repeated measurements: bane and boon of the GUM approach to the uncertainty of measurement JF - Accreditation and quality assurance N2 - With measurement uncertainty estimation accounting for all relevant uncertainty contributions, the results of measurements using the same procedure on different objects or samples may no longer be considered as being independent, and correlations have to be taken into account. For this purpose, a simple approximation for the estimation of covariances is derived and applied to the estimation of uncertainty for some basic combinations of two measurement results. This covariance estimate is also applied to the estimation of uncertainty for the mean value of the results of replicate measurements on the same object or sample. KW - Uncertainty KW - GUM approach KW - Correlation KW - Covariances KW - Repeated measurements PY - 2004 DO - https://doi.org/10.1007/s00769-004-0821-2 SN - 0949-1775 SN - 1432-0517 VL - 9 IS - 10 SP - 597 EP - 600 PB - Springer CY - Berlin AN - OPUS4-3818 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -