(used with a singular verb) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and regularity on aggregates of more or less disparate elements.
(used with a plural verb) the numerical facts or data themselves.

1780–90; see statistic, -ics Unabridged


noun Statistics.
a numerical fact or datum, especially one computed from a sample.

1780–90; < Neo-Latin statisticus. See status, -istic

nonstatistic, adjective
unstatistic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
statistic (stəˈtɪstɪk)
sampling statistic estimator See also parameter any function of a number of random variables, usually identically distributed, that may be used to estimate a population parameter

statistics (stəˈtɪstɪks)
1.  (functioning as plural) quantitative data on any subject, esp data comparing the distribution of some quantity for different subclasses of the population: statistics for earnings by different age groups
2.  (functioning as singular)
 a.  the classification and interpretation of such data in accordance with probability theory and the application of methods such as hypothesis testing to them
 b.  descriptive statistics See also statistical inference the mathematical study of the theoretical nature of such distributions and tests
[C18 (originally ``science dealing with facts of a state''): via German Statistik, from New Latin statisticus concerning state affairs, from Latin statusstate]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1770, "science dealing with data about the condition of a state or community," from Ger. Statistik, popularized and perhaps coined by Ger. political scientist Gottfried Aschenwall (1719-72) in his "Vorbereitung zur Staatswissenschaft" (1748), from Mod.L. statisticum (collegium) "(lecture course on)
state affairs," from It. statista "one skilled in statecraft," from L. status (see state (n.1)). Meaning "numerical data collected and classified" is from 1829. Abbreviated form stats first recorded 1961. Statistician is from 1825.

"quantitative fact or statement," 1880; see statistics.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
statistics   (stə-tĭs'tĭks)  Pronunciation Key 
  1. (Used with a singular verb) The branch of mathematics that deals with the collection, organization, analysis, and interpretation of numerical data. Statistics is especially useful in drawing general conclusions about a set of data from a sample of the data.

  2. (Used with a plural verb) Numerical data.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

statistics definition

The branch of mathematics dealing with numerical data. (See mean, median, mode, normal distribution curve, sample, standard deviation, and statistical significance.)

Note: A particular problem of statistics is estimating true values of parameters from a sample of data.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Computing Dictionary

statistics definition

statistics, mathematics
The practice, study or result of the application of mathematical functions to collections of data in order to summarise or extrapolate that data.
The subject of statistics can be divided into descriptive statistics - describing data, and analytical statistics - drawing conclusions from data.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
The figures for the last years of the mandate are based on continuous
  collection of data by the department of statistics.
Then other scientists publicly take apart the discovery-the measurements were
  full of errors, the statistics were cursory.
Several statistics seemed to support this damning conclusion.
Statistics are unreliable with declared income still a novelty, but brokers say
  the number is surely in the hundreds of thousands.
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