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# Histogram

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## Histogram - definitions

Histogram - graphic summary of variation in a set of data. The pictorial nature of a histogram lets people see patterns that are difficult to detect in a simple table of numbers. One of the seven tools of quality

[Category=Quality ]

Source: American Society for Quality, 26 September 2010 08:49:11, http://www.asq.org/glossary/

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Histogram - A bar graph of a frequency distribution in which the widths of the bars are proportional to the classes into which the variable has been divided and the heights of the bars are proportional to the class frequencies.

A histogram is a basic graphing tool that displays the relative frequency or occurrence of continuous data values showing which values occur most and least frequently. A histogram illustrates the shape, centering, and spread of data distribution and indicates whether there are any outliers.

A graphic way to summarize data. Size is shown on the horizontal axis (in cells) and the frequency of each size is shown on the vertical axis as a bar graph. The length of the bars is proportional to the relative frequencies of the data falling into each cell and the width is the range of the cell. Data is variable measurements from a process.

[Category=Data Quality ]

Source: iSixSigma, 26 January 2011 08:07:01, https:web.archive.org/web/20111109014246/http:www.isixsigma.com/index.php?option=com_glossary

Histogram - a graphical representation of a frequency distribution in the form of rectangles whose bases are equal to the cell interval and whose areas are proportional to the frequencies.

[Category=Quality ]

Source: The Quality Portal, 11 April 2011 11:22:43, http://thequalityportal.com/glossary/g.htm

histogram - [statistics] A graph showing the distribution of values in a set of data. Individual values are displayed along a horizontal axis, and the frequency of their occurrence is displayed along a vertical axis.

[Category=Geospatial ]

Source: esri, 10 May 2012 10:09:00, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation

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