Simply having the PDF is not enough. To master uncertainty analysis:
(often referred to simply as "PTC 19.1" or the "Test Uncertainty Standard") establishes the definitive methodology for evaluating and expressing uncertainty in test measurements. It serves as the underlying mathematical foundation for almost all other ASME Performance Test Codes (PTCs). The standard guides engineers in calculating the "Uncertainty Interval," which defines the range within which the true value of a measurement is expected to lie. The current active version is ASME PTC 19.1-2018 . asme ptc 191 pdf
The heart of PTC 19.1 is the separation of uncertainty into two distinct types: Simply having the PDF is not enough
: Uncertainties evaluated by means other than statistical analysis (e.g., manufacturer specs or previous data). manufacturer specs or previous data).