chi-square

noun, often attributive
\ ˈkī-ˈskwer How to pronounce chi-square (audio) \

Definition of chi-square

: a statistic that is a sum of terms each of which is a quotient obtained by dividing the square of the difference between the observed and theoretical values of a quantity by the theoretical value

First Known Use of chi-square

1900, in the meaning defined above

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The first known use of chi-square was in 1900

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Cite this Entry

“Chi-square.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chi-square. Accessed 18 Sep. 2020.

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