chi-square

noun

often attributive
: 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

Word History

First Known Use

1900, in the meaning defined above

Time Traveler
The first known use of chi-square was in 1900

Dictionary Entries Near chi-square

Cite this Entry

“Chi-square.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chi-square. Accessed 26 Jan. 2023.

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