Measurement error


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Measurement error

Errors in measuring an explanatory variable in a regression, which leads to biases in estimated parameters.

Measurement Error

The difference between the value of some quantity and the value obtained by measuring it. It is nearly impossible to attain accurate measurements all the time, especially when one uses a single means of calculation. For this reason, when measuring the value of a company or asset, many analysts will check and double-check their work, and perhaps calculate the value using a different method, in order to ensure accuracy. See also: Audit, Due diligence.
References in periodicals archive ?
[4], for the linear measurement error model, using the corrected likelihood [16].
That means the value of the measurement error of attribute a in [-n(a), +n(a)].
These grouped cohorts are used to increase the number of observations within a cohort, which is recommended to reduce the measurement error bias.
Vivisecting Measurement Error across Multiple Tasks Using Generalizability Theory
Moreover, wideband antennas like spiral typically have 5 degrees phase tracking error in their range of view which should be added to the phase measurement error.
When the results of multiple hearing tests were averaged, more than half of the apparent noise-induced hearing losses had disappeared, a finding consistent with measurement error.
Denoting the revised output gap as [x.sub.t] = [y.sub.t] - [y.sup.*.sub.t], the real-time gap is equal to the revised gap plus the measurement error, [[??].sub.t] = [x.sub.t] + [z.sub.t].
of Massachusetts) offers an overview of the strategies used for dealing with measurement error in complex models and the use of extra data to estimate measurement error parameters.
Additionally, the effects of different temperatures on the C[O.sub.2] measurement error, the impact of different C[O.sub.2] concentration levels on the recorded C[O.sub.2] error of the sensors, the significance of the calibration temperature on the accuracy of the C[O.sub.2] measurements, and the effects of different humidity levels on the C[O.sub.2] measurements were examined to determine which parameters affect the accuracy of the C[O.sub.2] concentration measurements.
The companies developed an experimental transmission system within Fujitsu Laboratories that emulates an optical network, and with about 10 thousand pieces of data verified that this technology could estimate OSNR with a measurement error of 1%, and could estimate modulation format and symbol rate with a measurement error of 5%.
However, there is much space for improvement in the measurement error of the RDPF sensor.
For example, an increase in the measurement error from 0.5% to 1.5% SD produced a shift in the estimated X value for BV from 51 to only 5.051.
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