Statistics theory: Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>Hendra I. Nurdin
(Editing explained in Talkpage)
imported>Hendra I. Nurdin
mNo edit summary
Line 3: Line 3:
'''Statistics''' refers first to a branch of [[mathematics]] that specializes in enumeration [[data]] and their relation to measured [[data]].  It may also refer to a [[Fact of classification|fact of classification]], which is the chief source of all statistics.
'''Statistics''' refers first to a branch of [[mathematics]] that specializes in enumeration [[data]] and their relation to measured [[data]].  It may also refer to a [[Fact of classification|fact of classification]], which is the chief source of all statistics.


In the singular, a statistic refers to a derived numerical value, such as a [[mean]], a [[coeffecient of correlation]], or some other single [[Descriptive statistics|descriptive]] concept.  It may also refer to an idea of an average, such as a [[median]], or [[standard deviation]], or a value computed from a [[set]] of data. <ref>Guilford, J.P., Fruchter, B. (1978). ''Fundamental statistics in psychology and education''. New York: McGraw-Hill.</ref>  
In the singular, a statistic refers to a derived numerical value, such as a [[mean]], a [[coefficient of correlation]], or some other single [[Descriptive statistics|descriptive]] concept.  It may also refer to an idea of an average, such as a [[median]], or [[standard deviation]], or a value computed from a [[set]] of data. <ref>Guilford, J.P., Fruchter, B. (1978). ''Fundamental statistics in psychology and education''. New York: McGraw-Hill.</ref>  


More precisely and generally, in mathematical statistics, a statistic is defined as any [[measurable  function]] of the data sample<ref>J. Shao (2003). ''Mathematical Statistics'' (2 ed.). ser. Springer Text in Statistics, New York: McGraw-Hill, p. 100</ref>.  A data sample is regarded as instances of a [[random variable]] of interest such as a height, weight, polling results, test performance, and so on, obtained by [[random sampling]] of a population.   
More precisely and generally, in mathematical statistics, a statistic is defined as any [[measurable  function]] of the data sample<ref>J. Shao (2003). ''Mathematical Statistics'' (2 ed.). ser. Springer Text in Statistics, New York: McGraw-Hill, p. 100</ref>.  A data sample is regarded as instances of a [[random variable]] of interest such as a height, weight, polling results, test performance, and so on, obtained by [[random sampling]] of a population.   

Revision as of 17:27, 10 November 2007

This article is developing and not approved.
 Main Article
 Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
Advanced [?]
 
https://en.citizendium.org/wiki/index.php?title=Statistics_theory&printable=yes
This editable Main Article is under development and subject to a disclaimer.

Statistics refers first to a branch of mathematics that specializes in enumeration data and their relation to measured data. It may also refer to a fact of classification, which is the chief source of all statistics.

In the singular, a statistic refers to a derived numerical value, such as a mean, a coefficient of correlation, or some other single descriptive concept. It may also refer to an idea of an average, such as a median, or standard deviation, or a value computed from a set of data. [1]

More precisely and generally, in mathematical statistics, a statistic is defined as any measurable function of the data sample[2]. A data sample is regarded as instances of a random variable of interest such as a height, weight, polling results, test performance, and so on, obtained by random sampling of a population.

See also

References

  1. ↑ Guilford, J.P., Fruchter, B. (1978). Fundamental statistics in psychology and education. New York: McGraw-Hill.
  2. ↑ J. Shao (2003). Mathematical Statistics (2 ed.). ser. Springer Text in Statistics, New York: McGraw-Hill, p. 100
Retrieved from "https://citizendium.org/wiki/index.php?title=Statistics_theory&oldid=328718"