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


index | Index

Spike - definitions

Spike - (informal) See verify.

[Category=Postal ]

Source: USPS, 30 October 2009 15:59:09, External

These advertisers support this free service

Spike - Spike - A substance that is added to an environmental sample to increase the concentration of target analytes by known amounts; used to assess measurement accuracy (spike recovery). Spike duplicates are used to assess measurement precision.

[Category=Quality Assurance ]

Source: Massachusetts Department of Environmental Protection, 28 March 2011 09:03:38, External


   (1) [statistics] An anomalous data point that protrudes above or below an interpolated surface.
   (2) [data capture] An overshoot line created erroneously by a scanner and its rasterizing software.

[Category=Geospatial ]

Source: esri, 28 August 2012 09:22:42, External 

Data Quality Glossary.  A free resource from GRC Data Intelligence. For comments, questions or feedback: