\ ˈkī-ˈskwer
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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
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“Chi-square.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chi-square. Accessed 28 Sep. 2021.
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Time Traveler for chi-square
The first known use of chi-square was in 1900
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