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.
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First, consider [[??].sub.T+1|T] when there are no location shifts, and only measurement errors. Then:
In particular, the authors find that missing data can generate sizeable measurement errors at the beginning of the period, especially for less advanced countries.
Although the Brinell test is widely known as one of the most accurate test methods for hardness testing of metals, error in the reading of the indentation size results in measurement errors of 0.1 mm between operators -- the range is even greater between labs.
The principal purpose of this article is to elaborate on certain conceptual and practical foundations of both the rollover and iron curtain approaches, with special emphasis on the originating-and-reversing property of income measurement errors and quantifications under the rollover approach.
The instrument offers maximum precision and productivity with 48, four-wire RTD inputs with Kelvin sensing to eliminate measurement errors. It provides 1,000V channel-to-channel isolation, virtually creating 48 separate instruments in one small box.
Meager is the knowledge about the nature and extend of measurement errors in social science surveys, argues Alwin (sociology and demography, Pennsylvania State U.), and insufficient the understanding of which factors in the design of questions and questionnaires contribute to the presence of errors.
* Achieve measurement errors less than 0.1 percent [+ or -] 1.5 mm.
Renscan5 allows five-axis scanning that measures at speeds up to 500mm/sec--virtually eliminating the measurement errors normally associated with existing three-axis scanning systems.
Although most studies attempt to adjust for some of these confounding factors, the adjustments are likely to be inadequate due to measurement errors. This makes studies on the long-term effects of alcohol consumption notoriously hard to conduct and often unreliable.
Measurement errors from ovality and product orientation are said to virtually disappear with the addition of a third axis of measurement.
The accuracy determinants are site location, North reference, and angle measurement errors. Triangulation requires that the AOA data from all sites be transmitted to one location at which the calculations are performed.
Specifications are presented and used to calculate potential measurement errors introduced by these transmitters.
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