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21 results for “Random measurement error”
The component of measurement error that varies unpredictably in replicate measurements, characterized by a distribution usually summarized by its standard deviation. VIM (JCGM 200…
Measured quantity value minus a reference quantity value; comprises a systematic component and a random component. VIM (JCGM 200:2012) 2.16 General
Closeness of agreement between the average of infinitely many replicate measured values and a reference value. Trueness relates inversely to systematic error, not random…
…D.1.1.5 random error [VIM 3.13] result of a measurement minus the mean that would result from an infinite number of…
…Error, % Effect Type Distribution Divisor Standard Fractional Uncertainty (σ), % Symbol Number of FFT averages for noise measurement N Noise = 10,000 1.0 Random…
…Any particular measurement can be decomposed as the sum of the unobserved true value, a random error (with expected value 0) and a systematic…
…IV.ESTIMATEDFLOWMETERUNCERTAINTIES Thepistonflowmeterhasbeeninregularuseforvacuum gaugeandleakcalibrationssince1984andthebellowsflow- metersincelate1985.Duringthistimedatahavebeencol- lectedontheuncertaintiescontributedbyindividualcompo- nentsoftheflowmeters aswellasontheoverall performance.Thesedatacanbeusedtoassesstheprobable errorsofbothflowmetersbetween10~ 6 and10~"mol/s. Theflowmetershavebeenoperatedatlowerflows,particu- larlythebellowsflowmeter,butfurtherdataarerequiredto fullyassesstheuncertaintiesbelow10~"mol/s.Thetotal…
…5.2 An example of the error due to a 5 nm (FWHM) triangular bandpass of the monochromator for the measurement of a yellow…
…AS AN OUTERLIMITOFTHEDISTRIBUTION OF RANDOM ERRORS, THREETIMESTHE STANDARD DEVIATION IS USED. SYSTEMATIC ERRORS DUETOTHE PROCEDURES USEDORTOENVIRON- MENTAL EFFECTS ARE LARGELY BALANCEDOUTANDCANUSUALLY BE REGARDED ASNEGLIGIBLE…
…dividedinto"random"and"systematic" parts. Theformer,derivedfromthe well-defined estimatedstandarddeviationofthemeanofastatednumberof measurements andtheassumption ofanormaldistribution, wasgivenasone- halfthe99-percentconfidenceintervalofthemean. The"systematic" part wasgivenasthelinearadditionof"limits"ofotherpossibleerrorsinthe measurement system…
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