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chi-square distribution

British  
/ ˈkaɪˌskwɛə /

noun

  1. statistics a continuous single-parameter distribution derived as a special case of the gamma distribution and used esp to measure goodness of fit and to test hypotheses and obtain confidence intervals for the variance of a normally distributed variable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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The chi-square distribution curve is skewed to the right, and its shape depends on the degrees of freedom df.

From Textbooks • Sep. 19, 2013

The random variable in the chi-square distribution is the sum of squares of df standard normal variables, which must be independent.

From Textbooks • Sep. 19, 2013

An important parameter in a chi-square distribution is the degrees of freedom df in a given problem.

From Textbooks • Sep. 19, 2013

The key characteristics of the chi-square distribution also depend directly on the degrees of freedom.

From Textbooks • Sep. 19, 2013

For a chi-square distribution with five degrees of freedom, the curve is .

From Textbooks • Sep. 19, 2013

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.