Choose Index below for a list of all words and phrases defined in this glossary.


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Accuracy - definitions

Accuracy - degree of conformity of a measure to a standard or a true value. Level of precision or detail. 

[Category=Data Quality ]

Source: Martin Eppler, IAIDQ, External, 11-Jan-2009 14:32

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Accuracy to surrogate source : A measure of the degree to which data agrees with an original, acknowledged authoritative source of data about a real world object or event, such as a form, document, or unaltered electronic data received from outside the organisation.

[Category=Data Quality ]

Source: Larry English, IAIDQ, External, 11-Jan-2009 14:32

Accuracy - A characteristic of data. It means that the data has the correct value, is valid, and is attached to the correct record.

[Category=Data Governance ]

Source: The Data Governance Institute, 16 November 2009 08:41:15, External

Accuracy - A characteristic of data. It describes the closeness or agreement of a data value to the truth or an expected range of values.

[Category=Data Governance ]

Source: The Data Governance Institute, 16 November 2009 08:43:47, External

Accuracy - The characteristic of a measure.

[Category=Quality ]

Source: American Society for Quality, 29 August 2010 11:01:13, External

Accuracy - 1) Accuracy refers to clustering of data about a known target. It is the difference between a physical quantity's average measurements and that of a known standard, accepted 'truth,' vs. 'benchmark.' Envision a target with many arrows circling the bullseye, however, none of them are near each other.

2) Precision refers to the tightness of the cluster of data. Envision a target with a cluster of arrows all touching one another but located slightly up and to the right of the bullseye.

In practice it is easier to correct a process which has good precision than it is to correct a process which is accurate. This is due to the increased amount of variation associated with accurate but not precise process.

[Category=Data Quality ]

Source: iSixSigma, 29 December 2010 09:07:39, External

Accuracy - A measure of the closeness of an individual measurement or the average of a number of measurements to the true value. Accuracy includes a combination of random error (precision) and systematic error (bias) components that are due to sampling and analytical operations; the EPA recommends using the terms "precision" and "bias", rather than "accuracy," to convey the information usually associated with accuracy.

[Category=Quality Assurance ]

Source: Massachusetts Department of Environmental Protection, 15 March 2011 07:14:29, External

Accuracy - The closeness of agreement between an observed value and an accepted reference value. Also see Precision.

[Category=Quality ]

Source: The Quality Portal, 30 March 2011 07:51:49, External

Accuracy - Data accuracy is a measure for how well data represents the real-world construct to which it refers. Oftentimes one has to balance accuracy with whether or not the data is fit for a particular business use.

Accuracy is the most mentioned data quality dimension.

Achieving accurate and fit-for-purpose data is a main goal for data quality improvement.

[Category=Data Quality ]

Stibo Systems, 13 May 2011 09:28:55, External

accuracy - Source: OpenGIS Guide

The degree to which information on a map or in a digital database matches true or accepted values. Accuracy pertains to the quality of data and the number of errors contained in a dataset or map. In discussing a GIS database, it is possible to consider horizontal and vertical accuracy with respect to geographic position, as well as attribute, conceptual, and logical accuracy. The effect of inaccuracy and error on a GIS solution is the subject of sensitivity analysis. Accuracy, or error, is distinguished from precision, which concerns the level of measurement or detail of data in a database.

[Category=Geospatial ]

Source: Open Geospatial Consortium, 31 May 2011 09:46:20, External

accuracy - [mathematics] The degree to which a measured value conforms to true or accepted values. Accuracy is a measure of correctness. It is distinguished from precision, which measures exactness.

[Category=Geospatial ]

Source: esri, 07 January 2012 09:05:22, External

Accuracy - A dimension of quality relating to the degree to which the statistical information correctly describes that which it was designed to measure.

[Category=Data Quality ]

Source: Australian Bureau of Statistics, 21 November 2012 11:51:46, External

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