Whakamātautau chi-square
He whakamātautau tatauranga e whakatairite ana i ngā putanga kua kitea i ia kōhao ki te n/37 e tūmanakohia ana. Ka whakamahia hei whakatau mēnā he tītaha te wīra.
I roto i te horopaki
Tāpirihia te (kua kitea − tūmanako)² / tūmanako mō ngā kōhaotaputapuKōhaoTētahi o ngā wehenga e 37 kua tauia i te rōta. Arā anō: slot, cup.Pānuitia katoatia → e 37; whakatairitea ki te tohatoha chi-square i ngā taumata herekoretaiwhangaTaumata herekoreTe maha o ngā uara motuhake i tētahi tatauranga. Mō te whakamātautau chi-square i ngā kōhao e 37, e 36, nā te mea me tāpiri ngā tatau ki te tapeke.Pānuitia katoatia → e 36.
I whakaputaina e Karl Pearson te whakamātautau i te tau 1900, ā, ko tētahi o āna tauira tuatahi ko ngā hurihanga rūreti 26,306 i tuhia i Monte Carlo, i kitea e ia he āhua kore matapōkere. I muri mai, i kī te tātaritanga i hangaia ētahi e ngā kairīpoata nā rātou i tuhi.