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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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Metadata

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: Susan Dean (susanldean45@gmail.com), Barbara Illowsky, Ph.D. (illowskybarbara@deanza.edu)
Copyright Holders: Maxfield Foundation (cnx@cnx.org)
Maintainers: Susan Dean (susanldean45@gmail.com), Barbara Illowsky, Ph.D. (illowskybarbara@deanza.edu), Connexions (cnx@cnx.org)

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 Susan Dean
Changes:
Module: Descriptive Statistics: Measuring the Center of the Data: Added calculator instructions.

Version: 1.12 Jul 3, 2012 12:26 pm +0000 by Susan Dean
Changes:
Descriptive Statistics: Measuring the Center of the Data: Minor edit.

Version: 1.11 May 15, 2012 11:11 pm +0000 by Susan Dean
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 Susan Dean
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 Susan Dean
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 Susan Dean
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 Susan Dean
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 Susan Dean
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 Susan Dean
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 James Cooper
Changes:
roles updated

Version: 1.3 Jul 14, 2008 11:05 am +0000 by Connexions
Changes:
image review

Version: 1.2 Jul 3, 2008 11:26 am +0000 by Connexions
Changes:
post review updates

Version: 1.1 Jun 26, 2008 6:25 pm +0000 by Connexions
Changes:
Initial publication

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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/>.