CHIDIST compares the Chi square value to be given for a random sample that is calculated from the sum of (observed value-expected value)^2/ expected value for all values with the theoretical Chi square distribution and determines from this the probability of error for the hypothesis to be tested.
CHIDIST funtzioak emandako Chi karratuaren balioa, banaketaren Chi karratu teorikoa erabiliz, (ikusitako_ balioa - esperotako_ balioa) ^2/ esperotako_ balioa batuketaz kalkulatutako ausazko lagin batekin konparatzen du. Hemendik probatu nahi den hipotesiaren errorearen probabilitatea kalkulatzen du.