Ukubaluleka Kwezibalo Kwezesayensi
Izibalo ziyinsika ebalulekile ekuthuthukisweni kwesayensi yanamuhla. Cishe yonke insimu—kusukela kwezokwelapha kanye ne-biology kuya kwengqondo kanye nezomnotho kuya kobunjiniyela—ithembele ezibalweni ukuze icubungule idatha, ihlole imibono, futhi ifinyelele iziphetho ezinokwethenjelwa. Enkathini lapho kutholakala khona idatha eningi futhi izinqumo kumele zenziwe ngokushesha, indima yezibalo iba yinto ebaluleke kakhulu. Ngaphandle kwezibalo, isayensi ibingaba nzima ukuhlukanisa phakathi kokuhlangana kanye namaphethini anencazelo yangempela, futhi kungaba nzima ukunquma ukuthi okutholakele kuyathembeka yini.
Izibalo njengolimi lwedatha ocwaningweni
Empeleni, isayensi ihlose ukuqonda izenzakalo zemvelo nezenhlalo ngokubuka okuhlelekile. Lokhu kubuka kukhiqiza idatha: izinombolo, izigaba, izithombe, noma izilinganiso. Kodwa-ke, idatha eluhlaza ngokuvamile ayivezi incazelo esheshayo. Izibalo zisebenza "njengolimi" lokuhumusha idatha ibe ulwazi. Ngezibalo ezichazayo, abacwaningi bangafingqa idatha ngokusebenzisa amamethrikhi afana ne-mean, i-median, i-standard deviation, noma i-visualizations njenge-histograms kanye ne-scatterplots. Lezi zifinyezo zenza amaphethini ajwayelekile abonakale kakhulu futhi zisize abacwaningi baqonde izici zezinto ezifundwayo.
Isibonelo, ocwaningweni lwezempilo yomphakathi, idatha evela ezinkulungwaneni zeziguli ingafingqwa ukuze kuhlolwe ukuthambekela komfutho wegazi, amazinga kashukela egazini, noma inkomba yesisindo somzimba. Ngaphandle kwezifinyezo zezibalo, amasethi edatha amakhulu kangaka abeyoba yinkimbinkimbi kakhulu ukuhlaziya ngempumelelo. Izincazelo ezicacile zisiza abacwaningi ukuthi badlulisele imiphumela kubafundi, kungaba semaphephabhukwini esayensi noma emibikweni yenqubomgomo.
Izibalo ekuhlolweni kwe-hypothesis kanye nokuqinisekiswa kwemiphumela
Ngaphezu kokufingqa idatha, izibalo zidlala indima enkulu ekucabangeni—inqubo yokudweba iziphetho mayelana nenani labantu ngokusekelwe kusampula. Ocwaningweni, abacwaningi abavamile ukukwazi ukulinganisa lonke inani labantu ngenxa yemikhawulo yezindleko, isikhathi, noma ukufinyelela. Ngakho-ke, basebenzisa amasampula adwetshwe ngokuhlelekile. Izibalo zokucabanga zivumela abacwaningi ukulinganisa imingcele yabantu nokulinganisa ukungaqiniseki kwalezo zilinganiso.
Ukuhlolwa kwe-hypothesis kungenye yamathuluzi okuphetha aziwa kakhulu. Besebenzisa le ndlela, abacwaningi bangahlola ukuthi umehluko obonwe kudatha (isibonelo, umehluko emiphumeleni yokufunda phakathi kwezindlela ezimbili zokufundisa) kungenzeka ukuthi ubangelwa ngempela ukwelashwa noma ngenxa yengozi. Imibono efana namanani e-p, izikhawu zokuzethemba, kanye nosayizi wemiphumela isiza abacwaningi ukuthi benze izinqumo ezinengqondo kakhulu. Lesi yisisekelo esibalulekile sesayensi sokugwema ukuthembela kuphela ekuqondeni.
Kwezokwelapha, isibonelo, izivivinyo zezokwelapha zemithi emisha kumele zibonise ukusebenza kahle nokuphepha kwayo. Izibalo zisetshenziselwa ukuklama ucwaningo (inani labantu abadinga izifundo), ukuhlaziya imiphumela, nokunquma ukuthi imiphumela yomuthi ibalulekile ngokwezibalo futhi ibalulekile yini ngokwezokwelapha. Ngaphandle kwezibalo, ukuhlolwa kokusebenza kahle komuthi kungaba sengozini enkulu yokucwaswa kanye namaphutha.
Ukunciphisa ukucwasa nokuthuthukisa ikhwalithi yezindlela
Isayensi ayigcini nje ngokuthola izimpendulo, kodwa futhi nokuqinisekisa ukuthi inqubo yokuthola lezo zimpendulo ilungile. Izibalo zidlala indima ebalulekile ekwakhiweni kocwaningo ukuqinisekisa ukuthi imiphumela ayidukisi. Imibono efana nokungahleliwe, ukulawula, kanye nokuphuphuthekisa isetshenziswa kabanzi ekuhlolweni ukuze kuncishiswe ukucwaswa. Izibalo zisiza futhi ekubhekaneni neziguquguquko ezididayo, okuyizinye izici ezingathonya imiphumela, okwenza ubudlelwano bembangela nomphumela bungabonakali.
Isibonelo, uma umcwaningi efuna ukuthola ukuthi ukuzivocavoca kunciphisa yini ingozi yesifo senhliziyo, kumele acabangele ezinye izici ezifana nokudla, ubudala, imikhuba yokubhema, kanye namazinga okucindezeleka. Besebenzisa amasu okuhlaziya njengokubuyela emuva, abacwaningi bangalawula lezi zici, ngaleyo ndlela balinganisele ngokunembile umphumela wokuzivocavoca. Ngale ndlela, izibalo ziqinisa ukusebenza kwangaphakathi kocwaningo futhi zisize isayensi ukuthi ikhiqize iziphetho ezinokwethenjelwa kakhudlwana.
Izibalo kanye nokuphindaphinda kwesayensi yesimanje
Esinye sezimiso eziyinhloko zesayensi ukuphindaphinda: okutholakele okuhle kufanele kuphindwe ngabanye abacwaningi abanemiphumela efanayo. Emashumini eminyaka amuva nje, umhlaba wezemfundo ubhekane nalokho okuvame ukubizwa ngokuthi “inkinga yokuphindaphinda,” ikakhulukazi kwezengqondo kanye nesayensi yezenhlalo. Izifundo eziningi zithole imiphumela okunzima ukuyiphinda ngenxa yobukhulu obuncane besampula, ukuhlaziywa okunganele, noma ukubika okukhethiwe.
Izibalo zisiza ukubhekana nalezi zinkinga ngemikhuba yocwaningo esobala neqinile. Isibonelo, ukusetshenziswa kwezikhawu zokuzethemba kanye nobukhulu bemiphumela kukhuthaza abacwaningi ukuthi bangagxili nje kuphela ekutheni ucwaningo lubalulekile yini kodwa nasebukhulwini bomthelela. Ukuhlaziywa kwamandla kusiza ukuqinisekisa ukuthi usayizi wesampula mkhulu ngokwanele ukuthola umphumela obalulekile. Ngaphezu kwalokho, izindlela zokuhlaziya i-meta-analysis—ezihlanganisa imiphumela yezifundo eziningi—zithembele kakhulu kuzibalo ukuze zikhiqize iziphetho eziqinile neziqinile. Konke lokhu kubonisa ukuthi izibalo azilona nje ithuluzi lokubala, kodwa kunalokho ziyingxenye ebalulekile yokuziphatha kanye nekhwalithi yesayensi.
Indima yezibalo enkathini yedatha enkulu kanye nobuhlakani bokwenziwa
Esikhathini sedijithali, idatha ikhiqizwa emithonjeni eyahlukahlukene: izinzwa, imithombo yezokuxhumana, ukuthengiselana kwezomnotho, izithombe zesathelayithi, kanye namadivayisi ezempilo. Isimo sedatha enkulu sidinga amakhono okuhlaziya ayinkimbinkimbi kakhulu. Izibalo zithuthuke kanye nesayensi yedatha kanye nokufunda komshini. Nakuba ukufunda komshini kuvame ukubhekwa njengensimu ehlukile, izisekelo zayo zihlobene eduze nezibalo, ikakhulukazi ekubumbeni, ekulinganiseni, nasekuhloleni ukungaqiniseki.
Isibonelo, kwisayensi yezemvelo, idatha yesathelayithi ingahlaziywa ukuze kuqashwe izinguquko emahlathini, amazinga okushisa angaphezulu, ngisho namaphethini okungcola komoya. Izibalo zivumela abacwaningi ukwakha amamodeli okubikezela, ukukala amazinga amaphutha, nokunquma ukuthi izinguquko ezibonwayo zibaluleke ngempela yini. Ku-genomics, ukuhlaziywa kwezinkulungwane kuya kwezigidi zeziguquguquko zezakhi zofuzo kudinga izindlela eziqinile zezibalo ukuqinisekisa ukuthi okutholakele akugcini nje "ngokuhlangana" ngenxa yokuhlolwa okuningi.
Ngamanye amazwi, izibalo zisiza ososayensi ukugwema ukulahleka olwandle lwedatha. Inani elikhulu ledatha alikhiqizi ulwazi ngokuzenzakalelayo; kudingeka izindlela ezifanele zokuliguqula libe ukuqonda okusebenzayo.
Izibalo njengesisekelo sokwenza izinqumo ezisekelwe ebufakazini
Isayensi ayigcini nje ngombono. Okutholakele kwesayensi kuvame ukuqondisa izinqumo ezibalulekile: inqubomgomo yezempilo, ukuhlela kwezomnotho, amasu emfundo, ngisho nokuphathwa kwezinhlekelele. Izibalo zihlomisa abenzi benqubomgomo kanye nomphakathi ngekhono lokuqonda izingozi, amathuba, ukusebenza kahle kohlelo, kanye nomthelela wokungenelela.
Isibonelo, lapho ohulumeni behlola izinhlelo zokugoma, izibalo zisetshenziselwa ukubala ukwehla kwamacala, ukusebenza kahle kwemithi yokugoma, kanye nemiphumela emibi engaba khona. Lapho izikole zizama ikharikhulamu entsha, izibalo zisiza ekunqumeni ukuthi kukhona yini ukuthuthuka okuqhubekayo emiphumeleni yokufunda. Ebhizinisini nasezimbonini, izibalo zisetshenziselwa ukulawula ikhwalithi, ukwenza ngcono inqubo yokukhiqiza, kanye nokuhlaziywa kwemakethe. Izinqumo ezisekelwe kudatha kanye nokuhlaziywa kwezibalo zivame ukuba namandla kakhulu kunalezo ezisekelwe kuphela ekucabangeni noma emibonweni.
Isiphetho
Izibalo zidlala indima ebalulekile kwisayensi ngoba zisiza ukuguqula idatha ibe ulwazi, zihlole imibono ngobuqotho, zinciphise ukucwasa, futhi zandise ukuthembeka kokutholakele ngokuphindaphinda. Esikhathini sedatha enkulu kanye nobuhlakani bokwenziwa, izibalo ziya ngokuya zibaluleke njengesisekelo sokwenza amamodeli anembile nokwenza izinqumo. Ngokuqonda nokusebenzisa izibalo ngendlela efanele, abacwaningi bangakhiqiza ulwazi oluthembekile, kuyilapho umphakathi ungenza izinqumo ezinengqondo, ezisekelwe ebufakazini. Ngakho-ke, izibalo aziyona nje ithuluzi lezibalo, kodwa ziyisihluthulelo sokugcina ikhwalithi kanye nentuthuko yesayensi.
