Te Tātari Wāhanga
Ka pā ngā hapa ā-tinana ki ngā kōhao noho tata i te wā kotahi, nō reira whakamātauria ngā pewa o te wīra, kaua ko ngā tau takitahi anake.
Whakarōpūtia ngā kōhao e 37 ki ngā wāhanga pātata, ā, whakaritea ngā taunga i kitea ki ngā mea e tūmanakohia ana i ia wāhanga. Ko te tītaha pono ka kitea i te nuinga o te wā hei wāhanga kotahi, e rua rānei e noho tata ana, e wera ana puta noa i ngā tauira motuhake.
Tikanga
Wehewehea te wīra ki ngā wāhangawīraWāhangaHe pewa kōhao honohono i te wīra, he rerekē i tētahi rōpū i te mahere peti.Pānuitia katoatia → pātata, ko te tikanga noa e ono ngā pewa o ngā kōhaotaputapuKōhaoTētahi o ngā wehenga e 37 kua tauia i te rōta. Arā anō: slot, cup.Pānuitia katoatia → e ono, e whitu rānei, e whai ana i te raupapa o te wīra, kaua ko te mahere petitaputapuMahere petiTe tukutuku peti kua tāia ki te tēpu. Arā anō: tēpu, kākahu tēpu, felt.Pānuitia katoatia →. Mō ia wāhanga o ngā kōhao k, ko ngā taunga e tūmanakohia ana he n·k/37, ā, ko te hipanga paerewapāngarauHipanga paerewaTe pūtake rua o te tītaringa; te tawhiti noa o te hua i te uara tūmanako.Pānuitia katoatia → he √(n·p·(1−p)) me p = k/37. Tātaihia te z = (i kitea − e tūmanakohia ana)/σ mō ia wāhanga. Ko tētahi wāhanga kei runga ake i te +2 e tika ana kia tirohia anō; kei runga ake i te +3, i ngā tauira motuhake e rua, he mea whai take.
He aha ngā wāhanga
E 37 ngā tūpono o ngā whakamātautau kōhao kotahi ki te puta he hua teka, ā, he ngoikore te tohu i ia mea. E ono anake ngā tūpono o ngā whakamātautau wāhanga, ā, ka tāpiri te tohu puta noa i ngā kōhao noho tata. Ka hāngai hoki ki te ahupūngao: ko te wīra kāore i te papatairite ka wehe te pōrotaputapuPōroTe pōro iti ka panga ki te ara, ki te ahunga kōaro ki te rōta. Ko ngā pōro o nāianei he ivorine, he Teflon rānei, 18–21 mm.Pānuitia katoatia → i te ara i te taha teitei i te nuinga o te wā, ka manakohia he pewa; ko tētahi pakitarataputapuPakitaraTe wehenga whakarewa i waenga i ngā kōhao e rua i te wīra.Pānuitia katoatia → korara, piko rānei ka huri i te tupeke mō ngā kōhao i tōna taha; ko tētahi ara pōrotaputapuAra pōroTe awa i te taha o runga e rere ai te pōro i mua i tōna pōturi me tōna taka. Arā anō: te ara o runga.Pānuitia katoatia → kua ngaro ka hanga i tētahi rohe taka e manako ana ki ngā kōhao kei raro iho i te wā o te taka, ā, nā te tere rōtataputapuRōtaTe wāhanga o te wīra e huri ana, e mau ana i ngā kōhao.Pānuitia katoatia → e āta rerekē ana ka horahia puta noa i tētahi pewa whānui. Kāore tētahi o ēnei hapa e manako ana ki tētahi kōhao kotahi anake.
Ngā wāhanga neke
Ka taea e ngā rohe pūmau te wehe i tētahi pewa wera ki ngā wāhanga e rua, ā, ka whakaiti i a ia. Ko tētahi huarahi tautoko ka nekehia tētahi matapihi o ngā kōhao k huri noa i te wīra, ka tātaihia te z i ia tūranga e 37, ā, ka rapua te mōrahi. Ko te mōrahi o ngā kaute-z e 37 e hono ana i raro i te tōkeketanga, he āhua 2.2 ki te 2.5 i te nuinga o te wā, nō reira ko te mōrahi matapihi neke i raro i te 2.5 he haruru matapōkere, ā, ko te pae mō te aro he teitei ake, tata ki te 3.5.
Mai i te wāhanga ki te peti
Mēnā ka whakaūngia he wera tētahi wāhanga, ko te peti māori he kiritatapetiKiritataHe tau me ngā kōhao e rua i ia taha ōna i te wīra, e rima ngā maramara tau kotahi.Pānuitia katoatia → ki tōna pokapū, he huinga tau kotahipetiTau kotahiHe tau kotahi, ko te utunga 35:1.Pānuitia katoatia → rānei ka whakatakotoria ā-ringa puta noa. Ko te whakamātautau huamoni ko te auau taunga o te wāhanga ki te utungamoniUtungaTe moni ka whakahokia e te peti toa, ka kīia ko “X ki te 1”, hei tāpiri ki te moni peti ka whakahokia.Pānuitia katoatia →: me eke tētahi wāhanga kōhao e ono ki runga ake i te 6/36 = 16.7% o te wā (i kitea, i tāruatia) kia pae ōrite ngā maramaramoniMaramaraHe tohu e tohu ana i tētahi moni pūmau, ka whakatakotoria ki te mahere peti hei peti. Arā anō: check.Pānuitia katoatia → tau kotahi e ono, ki te taha o te 16.2% tōkeke. Ko te tawhiti he haurua ōrau, koinā te take ka hiahiatia ngā tekau mano hurihanga hei whakaū.
Te kaitātari
Ka whakaae te Kaitātari Tītaha Wīra i tēnei pae ki tētahi rārangi hurihanga, ka tātai i te chi-square, ā, ka whakaatu i te wīra hei mahere wera me ngā kaute-z wāhanga, ko te wehenga o runga ake te taunoa. Ka kōriporipo hoki i ō raraunga hei whakaatu i te āhua o aua tauanga anō i raro i te tōkeketanga, koinā te rongoā tere rawa mō te kite tauira.
Tātai
Ngā pātai
Ko te ono te paerewa. Mēnā he iti ake, ka ngaro te mārama; mēnā he maha ake, ka ngaro te kaha. Whakatauhia i mua.
Whakakotahitia, ā, tātaihia te z mō te pewa kua whakakotahitia. Ko te hapa pono ka whiti i tētahi rohe i te nuinga o te wā.
Kāo. He pewa wīra ngā wāhanga. Ehara ngā tatinipetiTatini1–12, 13–24, 25–36 rānei, ko te utunga 2:1.Pānuitia katoatia → me ngā tīwaepetiTīwaeNgā tau tekau mā rua i tētahi tīwae poutū o te mahere peti, ko te utunga 2:1.Pānuitia katoatia → i te wāhanga.
He katakata iti
He ā-tinana ngā hapa. He ā-rohe te ā-tinana. Whakamātauria ngā pewa.
Ngā Puna
- Barnhart, R. T. Beating the Wheel.
- Pearson, K. “On the criterion that a given system of deviations from the probable…”