# chi-square

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Related to chi-square: chi-square test

## chi-square

(kī′skwâr′)
n.
A test statistic that is calculated as the sum of the squares of observed values minus expected values divided by the expected values.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## chi-square

n
(Statistics) statistics an inferential statistic common in survey research
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

## chi′-square`

(ˈkaɪ)

n.
a statistical quantity equal to the summation over all variables of the quotient of the square of the difference between the observed and expected values divided by the expected value of the variable.
[1935–40]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The other is chi-square.(math.huis.edu/ javamath/ryan/ChiSquare.html) Chi-Square is easy to learn and understand.
M2 EQUITYBITES-January 6, 2014-Cerenis Therapeutics reports primary endpoint results for Phase IIb CHI-SQUARE study
M2 PHARMA-January 6, 2014-Cerenis Therapeutics reports primary endpoint results for Phase IIb CHI-SQUARE study
Chi-square statistics was used to assess association between categorical variables and Student's f-test to test association between continuous variables.
The Pearson Chi-square test shows that there is no association between the two variables equality in provisions for skill development and gender as the value of significance is .334 which is greater than .1.
Tables 1-3 used the Chi-square test for independence to assess the relationship between multiple variables and the concentration of lead in drinking water.
Statistical methods used were correlation analysis and chi-square test.
Tests of the association between dental erosion and factors were carried out using Mann-Whitney-U, unpaired t test, Chi-square test.
In the statistical analysis, chi-square, Student's t-test and Fisher's exact tests were used.

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