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The uncertainty budget of a measurement is

  • A.the amount of money allocated to purchasing instruments
  • B.the single largest error the measurement could suffer
  • C.the time allowed for the measurement to be completed
  • D.a tabulation of every contribution and how they combine

Answer: D

Listing each source, its magnitude, its distribution and its sensitivity coefficient makes the combination auditable and shows at once where an improvement would pay. It is the working document behind any quoted uncertainty.

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