Teko ya chi-square
Teko ya dipalopalo e bapisang palo ya ho otlwa ha mokotlana ka mong le n/37 e lebelletsweng. E sebediswa ho ahlola hore na lebidi le na le leeme.
Moelelong
Kopanya (e bonweng − e lebelletsweng)² / e lebelletsweng ho mekotlanadisebediswaMokotlanaE nngwe ya dikarolo tse 37 tse nang le dinomoro hodima rotor. Hape: slot, cup.Bala kaofela → e 37; bapisa le kabo ya chi-square ka degrees of freedomlaboratoriDegrees of freedomPalo ya maemo a ikemetseng ho statistic. Bakeng sa teko ya chi-square ho mekotlana e 37 ke 36, hobane dipalo di tlameha ho kopana ho ba kakaretso.Bala kaofela → tse 36.
Karl Pearson o phatlaladitse teko ena ka 1900, mme o mong wa mehlala ya hae ya pele e ne e le dipotoloho tse 26,306 tsa roulette tse ngotsweng Monte Carlo, tseo a ileng a fumana di sa bonahale e le tsa monyetla feela, ka mokgwa o belaetsang. Manollo ya morao e ile ya fana ka maikutlo a hore baqolotsi ba ditaba ba di ngotseng ba ne ba iqapetse tse ding.