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# About: Descriptive Statistics: Measuring the Center of the Data

Module by: Susan Dean, Barbara Illowsky, Ph.D.. E-mail the authors

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 Name: Descriptive Statistics: Measuring the Center of the Data ID: m17102 Language: English (en) Summary: This chapter discusses measuring descriptive statistical information using the center of the data Subject: Mathematics and Statistics Keywords: elementary, statistics License: Creative Commons Attribution License CC-BY 3.0 Authors: Copyright Holders: Maintainers: Latest version: 1.13 (history) First publication date: Jun 26, 2008 11:33 am +0000 Last revision to module: Mar 28, 2013 1:40 am +0000

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## Version History

 Version: 1.13 Mar 28, 2013 1:40 am +0000 by Changes: `Module: Descriptive Statistics: Measuring the Center of the Data: Added calculator instructions.` Version: 1.12 Jul 3, 2012 12:26 pm +0000 by Changes: `Descriptive Statistics: Measuring the Center of the Data: Minor edit.` Version: 1.11 May 15, 2012 11:11 pm +0000 by Changes: `Descriptive Statistics: Measuring the Center of the Data: Clarified language about mean and average. Added language to clarify the relationship between sample and population means.` Version: 1.10 Mar 14, 2012 9:53 am +0000 by Changes: `Module: Descriptive Statistics: Measuring the Center of the Data: Updated Mean, Median and Mode language.` Version: 1.9 Mar 8, 2010 8:32 pm +0000 by Changes: `Descriptive Statistics: Measuring the Center of the Data: Added Sampling Distributions and Statistic of a Sampling Distribution. ` Version: 1.8 Feb 7, 2009 11:49 am +0000 by Changes: `Descriptive Statistics: Measuring the Center of the Data: Clarified the language in the glossary items "mean" and "median." ` Version: 1.7 Jan 22, 2009 8:22 am +0000 by Changes: ` Descriptive Statistics: Measuring the Center of the Data: For the Aids example, enhanced the 20th and 21st values (the two 24s) so that they could be seen more clearly. ` Version: 1.6 Jan 8, 2009 10:24 pm +0000 by Changes: `Descriptive Statistics: Measuring the Center of the Data: Added a sentence at the very beginning of the section to provide a transition from the previous section.` Version: 1.5 Jan 8, 2009 7:49 pm +0000 by Changes: ```In Descriptive Statistics: Measures of the "Center" of the data, for clarity added "because it is not affected by the precise numerical values of the outliers" to the end of the sentence after the phrase "when there are extreme values or outliers." Also, added examples to help explain the location of the median expression (n+1)/2. ``` Version: 1.4 Oct 27, 2008 1:15 pm +0000 by Changes: `roles updated` Version: 1.3 Jul 14, 2008 11:05 am +0000 by Changes: `image review` Version: 1.2 Jul 3, 2008 11:26 am +0000 by Changes: `post review updates` Version: 1.1 Jun 26, 2008 6:25 pm +0000 by Changes: `Initial publication`

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## How to Cite and Attribute This Content

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### American Chemical Society (ACS) Style Guide:

Dean, S.; Illowsky, B. Descriptive Statistics: Measuring the Center of the Data, OpenStax-CNX Web site. http://cnx.org/content/m17102/1.13/, Mar 27, 2013.

### American Medical Assocation (AMA) Manual of Style:

Dean S, Illowsky B. Descriptive Statistics: Measuring the Center of the Data [OpenStax-CNX Web site]. March 27, 2013. Available at: http://cnx.org/content/m17102/1.13/.

### American Psychological Assocation (APA) Publication Manual:

Dean, S., & Illowsky, B. (2013, March 27). Descriptive Statistics: Measuring the Center of the Data. Retrieved from the OpenStax-CNX Web site: http://cnx.org/content/m17102/1.13/

### Chicago Manual of Style (Bibliography):

Dean, Susan, and Barbara Illowsky. "Descriptive Statistics: Measuring the Center of the Data." OpenStax-CNX. March 27, 2013. http://cnx.org/content/m17102/1.13/.

### Chicago Manual of Style (Note):

Susan Dean and Barbara Illowsky, "Descriptive Statistics: Measuring the Center of the Data," OpenStax-CNX, March 27, 2013, http://cnx.org/content/m17102/1.13/.

### Chicago Manual of Style (Reference, in Author-Date style):

Dean, S., & Illowsky, B. 2013. Descriptive Statistics: Measuring the Center of the Data. OpenStax-CNX, March 27, 2013. http://cnx.org/content/m17102/1.13/.

### Modern Languages Association (MLA) Style Manual:

Dean, Susan, and Barbara Illowsky. Descriptive Statistics: Measuring the Center of the Data. OpenStax-CNX. 28 Mar. 2013 <http://cnx.org/content/m17102/1.13/>.