uncertMABC {masscor}

Uncertainty of the Magnitude of the Air Buoyancy Correction factor

Description

Propagates density uncertainties in the calculation of the Magnitude of Air Buoyancy Correction (See MABC()).

Usage

uncertMABC(rho = 0.998, rho_w = 8, rho_air = NULL, u_rho = 1e-04,
  u_rho_w = 0.006, u_rho_air = NULL, plot = TRUE, printRelSD = TRUE)

Arguments

rho

density of the sample in g~cm^{-3}

rho_w

density of the weigths in g~cm^{-3}

rho_air

density of the air in g~cm^{-3}. If not provided, the value returned by the function airDensity() with no parameters is used. See airDensity() for details.

u_rho

standard uncertainty of the sample density.

u_rho_w

standard uncertainty of the mass standard density.

u_rho_air

standard uncertainty of air density. See uncertAirDensity().

plot

logical. If TRUE (the default), the relative uncertainty contributions are shown in a barplot.

printRelSD

Logical. If TRUE (the default), a short statement indicating relative standard uncertainty of the air density estimation is printed.

Details

Calculations are made according to the Guide to the Guide to the expression of uncertainty in measurement (GUM, JCGM, 2008) as implemented by the package metRology (Ellison, 2018). If air density and associated uncertainty are not provided the default output values of the functions airDensity() and uncertAirDensity(), respectively, are used.

Value

Numeric value of uncertainty for the Magnitude of the Air Buoyancy Correction factor.

References

BIMP JCGM (2008) Evaluation of measurement data — Guide to the expression of uncertainty in measurement.

Andrej-Nikolai Spiess (2018). propagate: Propagation of Uncertainty. R package version 1.0-6. https://CRAN.R-project.org/package=propagate