chi-square

[ kahy-skwair ]
/ ˈkaɪˌskwɛər /

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.

Origin of chi-square

First recorded in 1935–40

Example sentences from the Web for chi-square

Medical definitions for chi-square

chi-square

n.

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
[ kīskwâr ]

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