Amasu Okuhlaziya Idatha Yezibalo
Ukusetshenziswa kwezibalo ekuhlaziyweni kwedatha sekubaluleke kakhulu emikhakheni eyahlukene, kusukela kwezebhizinisi kanye nezempilo kuya kwisayensi kanye nesayensi yezenhlalo. Izibalo zihlinzeka ngamathuluzi avumela abacwaningi kanye nochwepheshe ukuthi bahumushe futhi bafinyelele iziphetho kusuka kudatha eyinkimbinkimbi. Kulesi sihloko, sizoxoxa ngamasu ahlukahlukene asetshenziswa kakhulu okuhlaziya idatha yezibalo, okuhlanganisa izindlela ezichazayo, eziqondayo, ezibuyela emuva, kanye nezindlela eziningi, kanye nokusetshenziswa kwazo empilweni yansuku zonke.
1. Ukuhlaziywa Okuchazayo
I-Pendahuluan
Ukuhlaziywa okuchazayo kuhlose ukuchaza, ukufingqa, nokuhlela idatha ngendlela eqondakala kalula. Le ndlela ihlanganisa ukusetshenziswa kwamathebula, amagrafu, kanye nezibalo ezichazayo.
Ubunjiniyela Obujwayelekile
1. Ukusatshalaliswa Kwemvamisa: Le ndlela ihilela ukuhlanganisa idatha ngezigaba ngokusekelwe emvamisa yokwenzeka. Isibonelo, ukusatshalaliswa kwemvamisa kungasisiza siqonde ukuthi amaphuzu okuhlolwa kwabafundi asatshalaliswa kanjani.
2. Ithebula Lezinto Ezingalindelekile: Leli thebula lisetshenziselwa ukukhombisa ubudlelwano phakathi kweziguquguquko ezimbili zesigaba, isibonelo ukuthola ukuthi kukhona yini ubudlelwano phakathi kobulili kanye nokukhetha komkhiqizo.
3. Amagrafu Namashadi: Amagrafu ebha, ama-histogram, namashadi ephayi amathuluzi abonakalayo asebenza kahle kakhulu okumela idatha. Isibonelo, i-histogram ingabonisa ukusatshalaliswa kwamaphuzu okuhlolwa ngaphakathi kwekilasi.
4. Izilinganiso Zokuba Semkhathini: Isilinganiso, i-median, kanye nemodi yizilinganiso zokuba semkhathini ezisiza ekufinyezweni kwedatha ngamanani aphakathi edatha.
5. Izilinganiso Zokusabalala: Ukuphambuka okujwayelekile, ukuhlukahluka, kanye nobubanzi yizilinganiso zokusabalala ezisiza ukuqonda ukuhlukahluka kwedatha.
Isicelo
Isibonelo, emkhakheni wezempilo, ukuhlaziywa okuchazayo kungasetshenziswa ukuchaza ukusatshalaliswa kweziguli esibhedlela.
2. Ukuhlaziywa Kweziphetho
I-Pendahuluan
Ukuhlaziywa kokuqagela kuhlose ukwenza ukujwayelana ngenani labantu ngokusekelwe kudatha yesampula. Le ndlela ibalulekile ekwenzeni izinqumo kanye nokuhlolwa kwe-hypothesis.
Ubunjiniyela Obujwayelekile
1. Ukuhlolwa Kwe-Hypothesis: Lokhu kuhilela ukuhlola izibikezelo mayelana nemingcele yabantu. Izibonelo ezivamile zifaka phakathi ukuhlolwa kwe-t, ukuhlolwa kwe-Z, kanye nokuhlolwa kwe-chi-square.
2. Isikhawu Sokuqiniseka: Lesi sikhawu sinikeza isilinganiso sebanga lapho ipharamitha yabantu ingase ilale khona, ngokusekelwe kudatha yesampula.
3. I-ANOVA (Ukuhlaziywa Kokuhlukahluka): Isetshenziselwa ukuqhathanisa amaqembu amathathu noma ngaphezulu ukuze kubonakale ukuthi izindlela zawo zihluke kakhulu yini.
Isicelo
Isibonelo, ocwaningweni lwezokwelapha, umcwaningi angasebenzisa ukuhlolwa kwe-t ukuze anqume ukuthi umehluko phakathi komfutho wegazi ophakathi phakathi kwamaqembu amabili eziguli (isb., iqembu elilodwa elithola umuthi omusha kanye nelinye elithola i-placebo) ubalulekile ngokwezibalo.
3. Ukuhlaziywa Kokuhlushwa
I-Pendahuluan
Ukuhlaziywa kokuhlehla kusetshenziselwa ukuhlola ubudlelwano phakathi kweziguquguquko ezimbili noma ngaphezulu, ngokuvamile ngenhloso yokubikezela noma ukuchaza.
Ubunjiniyela Obujwayelekile
1. Ukuhlehla Okuqondile Okulula: Le ndlela isetshenziselwa ukukhombisa ubudlelwano phakathi kwe-variable eyodwa ezimele (isibikezeli) kanye ne-variable eyodwa exhomeke kuyo (umphumela).
2. Ukuhlehla Okunemigqa Eminingi: Le ndlela ihilela okungaphezu kokukodwa okuguquguqukayo okuzimele ukubikezela okuguquguqukayo okukodwa okuxhomeke kukho.
3. Ukuhlehla Kwezinto Ezidingekayo: Lokhu kusetshenziswa lapho i-variable exhomeke kuyo i-binary noma i-categorical, isibonelo, ukubikezela ukuthi isiguli sinesifo esithile (yebo/cha) ngokusekelwe ezicini ezahlukahlukene zengozi.
Isicelo
Ekukhangiseni, ukuhlehla okulula okuqondile kungasetshenziswa ukubikezela ukuthengisa ngokusekelwe ekusetshenzisweni kwezikhangiso. Ukuhlehla kwe-logistic kungasetshenziswa empilweni yomphakathi ukubikezela ingozi yokushaywa yisifo sohlangothi ngokusekelwe ezicini ezifana nobudala, isisindo, kanye nemikhuba yokubhema.
4. Ukuhlaziywa kwe-Multivariate
I-Pendahuluan
Ukuhlaziywa kwe-Multivariate kuhilela ukutadisha ngasikhathi sinye kwezinguquko ezimbili noma ngaphezulu ezixhomeke kuzo. Umgomo ukuqonda amaphethini ayinkimbinkimbi obudlelwano phakathi kwezinguquko.
Ubunjiniyela Obujwayelekile
1. Ukuhlaziywa Kwezici: Kusetshenziselwa ukuhlonza amaqembu eziguquguquko ezihlobene kakhulu ukuze ahlanganiswe abe yizici ezilula.
2. Ukuhlaziywa Kweqembu: Kusetshenziswa ukuhlanganisa amasethi edatha afanayo ngamaqoqo. Lokhu kuyasiza ekuhlukaniseni imakethe, lapho amakhasimende anokuziphatha okufanayo kokuthenga angahlanganiswa khona.
3. Ukuhlaziywa Kwezingxenye Eziyinhloko (i-PCA): Kusetshenziselwa ukunciphisa ubukhulu bamasethi edatha amakhulu ngenkathi kugcinwa ukuhlukahluka okuphawulekayo kudatha.
Isicelo
Ocwaningweni lwezakhi zofuzo, ukuhlaziywa kwezici kungasetshenziswa ukuhlonza amaqembu ezakhi zofuzo asebenzisana ndawonye. Ekukhangiseni, ukuhlaziywa kweqoqo kungasetshenziswa ukuhlonza izingxenye zemakethe ezihlukile ngokusekelwe kulokho okuthandwa ngabathengi.
Isiphetho
Amasu ezibalo anikeza amathuluzi ahlukahlukene awusizo kakhulu okuhlaziya idatha. Asukela kumasu okuchaza kuya ekwenzeni lula nokuchaza idatha, kuya kumasu okucabanga ukwenza ukujwayela kanye nezinqumo ngokusekelwe kudatha yesampula. Ahlanganisa nezindlela zokuhlehlisa ukuze abonise ubudlelwano phakathi kwezinguquko kanye namasu e-multivariate ukuze aqonde amaphethini ayinkimbinkimbi kudatha.
Ukwazi kahle lawa masu kwenza abacwaningi nochwepheshe bakwazi ukwenza ukuhlaziywa kwedatha okuphelele futhi banikeze isisekelo esiqinile sokwenza izinqumo ezinolwazi. Kulesi sikhathi solwazi, ukusebenzisa amasu okuhlaziya idatha yezibalo afanele kunganikeza inzuzo enkulu yokuncintisana emikhakheni eyahlukahlukene.
Ngakho-ke, ukuqonda lawa masu akulona nje ikhono elengeziwe, kodwa nesidingo esiyisisekelo sokubhekana nezinselele zedatha kuleli zwe elihlala lishintsha.
