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 ?
Here, an alternative approach for assessing the models' performance is used, which considers the percentage of the models' data values that are within observational error ([E.
1] = k whenever the observational error is used to fit the model (Punt, 1990).
To the extent that the research supports PLT, the presence of observational error is likely to make its benefits greater, not smaller.
In this paper tribute is paid to the de Zeeuw (1995, 1998, 2000) conception of scientific research as an evolving organized activity (2) that aims to improve upon observation, the most common types of improvement being `seeing better', for example through new and more powerful telescopes, and achieving `closure over observations', for example through bounding the observational error in, for example, the earth's gravitational constant.
And, with Egyptian concerns about precision - one might even say obsession with precision - an observational error of such magnitude would be unacceptable.
In Germany in the 1850s physiologists such as Karl Vierordt rejected physicist Gustav Radicke's work on medical observational error and deviation.
when given a physical interpretation, remain within the margins of observational error.
The FDA's recent expanded approval of CAD technology for use in symptomatic patients will help to decrease the risk of observational error in the interpretation of these perceptually complex mammograms and increase the odds of detecting subtle breast cancers at the earliest possible opportunity," said Deborah Kass, M.
While it is possible that future developments in data assimilation may enable the discernment of model error from observational error in bias corrections, there is little doubt that highly accurate data will make any such discernment more tractable.
And, with Egyptian concerns about precision--one might even say obsession with precision--an observational error of such magnitude would be unacceptable.
Tycho's observing regimen reflected an appreciation of observational error.
The observational errors with a small dispersion form a "hat" above the normal fit and cause a kurtosis effect, while the errors of less accurate observations are modeled by 7 % evenly distributed outliers whose magnitude is between 2.
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