chi-square

[ kahy-skwair ]

/ ˈkaɪˌskwɛər /

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noun Statistics.

a 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.

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Origin of chi-square

First recorded in 1935–40

Words nearby chi-square

Chisholm, Chisholm Trail, Chishtiya, Chisimaio, Chişinău, chi-square, chi-square distribution, chi-square test, chit, Chita, chital

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use chi-square in a sentence

Some longtime local acquaintances are struggling to square the man they know with the ugly associations.
No. 3 Republican Admits Talking to White Supremacist Conference|Tim Mak|December 30, 2014|DAILY BEAST
This last trip it had felt as if there were more cameras around Havana than Times Square.
The Life and Hard Times Of The Family A Cuban Defector Left Behind|Brin-Jonathan Butler|December 19, 2014|DAILY BEAST
Records describe this house as 6,916 square feet, with six bedrooms and eight bathrooms.
The Luxury Homes That Torture and Your Tax Dollars Built|Michael Daly|December 12, 2014|DAILY BEAST
The international media had been waiting on Wenceslas Square since early afternoon.
How Havel Inspired the Velvet Revolution|Michael Zantovsky|December 6, 2014|DAILY BEAST

In the afternoon, about a thousand people marched in protest through the largest Prague square, with police nowhere in sight.
How Havel Inspired the Velvet Revolution|Michael Zantovsky|December 6, 2014|DAILY BEAST
Nowhere can be found a region capable of supporting a larger population to the square mile than Lombardy.
Glances at Europe|Horace Greeley
For years his lordship was seldom seen in London, the great house in Grosvenor Square was never opened.
The Pit Town Coronet, Volume I (of 3)|Charles James Wills
She opened the door of a square room with large roses on the white wall-paper, and fine old mahogany furniture.
Ancestors|Gertrude Atherton
I would not just then have traded off that steamboat for several square miles of snow-capped sublimity.
Glances at Europe|Horace Greeley
The building, which has five storeys, stands on three sides of a square courtyard, and faces into Edmund Street.
Showell's Dictionary of Birmingham|Thomas T. Harman and Walter Showell

Medical definitions for chi-square

chi-square

A test statistic that is calculated as the sum of the squares of observed values minus expected values divided by the expected values.

Scientific definitions for chi-square

chi-square

[ kī′skwâr′ ]

A test statistic that is calculated as the sum of the squares of observed values minus expected values divided by the expected values.