Primary vs Secondary Data
Muaj qhov sib txawv ntawm Cov ntaub ntawv tseem ceeb thiab theem nrab, uas yog siv rau ntau yam kev tshawb fawb. Cov no feem ntau txawv raws li lub hom phiaj ntawm kev sau cov ntaub ntawv. Yog tias cov ntaub ntawv khaws tseg, yog thawj thiab sau thawj zaug los ntawm tus kws tshawb fawb lossis tus neeg tshawb xyuas ces cov ntaub ntawv yog thawj. Ntawm qhov tod tes, yog tias cov ntaub ntawv raug sau los ntawm kev siv cov peev txheej uas twb muaj lawm, ces cov ntaub ntawv yog cov ntaub ntawv thib ob. Qhov no yog qhov sib txawv ntawm cov ntaub ntawv tseem ceeb thiab theem nrab. Kab lus no sim muab kev nkag siab zoo ntawm ob hom ntaub ntawv thaum piav qhia qhov txawv ntawm ob hom.
Cov Ntaub Ntawv Tseem Ceeb yog dab tsi?
Cov ntaub ntawv tseem ceeb raug sau nrog lub hom phiaj ntawm kev txheeb xyuas qee yam tshwj xeeb xav tau los ntawm tus kws tshawb fawb. Rau lub hom phiaj no, nws tuaj yeem siv cov lus nug uas qhia txog yam tshwj xeeb uas nws yuav tsum tau sau. Cov ntaub ntawv no yuav tsum tsis txhob raug sau los ntawm lwm tus neeg tshawb xyuas yav dhau los txhawm rau ua cov ntaub ntawv tseem ceeb. Yog li ntawd, ua ntej sau cov ntaub ntawv tseem ceeb, nws yog ib qho tseem ceeb los soj ntsuam seb puas muaj lwm qhov chaw muaj nrog cov ntaub ntawv xav tau los ntawm tus kws tshawb fawb.
Yog tias ib tus neeg xav tau cov ntaub ntawv tseem ceeb, txoj kev nrov tshaj plaws yog cov lus nug. Yog vim li cas rau qhov no yog, tus kws tshawb fawb lossis lub chaw soj ntsuam tuaj yeem tsim cov ntawv nug raws li lawv cov kev xav tau. Hauv cov qauv no, txawm hais tias nws muaj tseeb tias cov neeg tshawb xyuas tuaj yeem tau txais cov ntaub ntawv ncaj qha los ntawm cov neeg nyiam, lawv yuav tsum xav txog tag nrho cov nqi ntawm cov kev tshawb fawb thiab. Tus nqi ntawm kev sau cov ntaub ntawv tseem ceeb suav nrog tus nqi siab dua rau cov lus nug ntau, cov peev txheej xav tau rau kev mus ntsib, thiab ntau dua ntawm cov nqi sijhawm. Xav txog tus nqi thiab lub sijhawm ntawm cov ntaub ntawv tseem ceeb, nws yog ib txwm pom zoo ua ntej los xyuas seb puas muaj cov ntaub ntawv thib ob uas haum rau lub hom phiaj, lossis hloov tau yooj yim siv tom qab ua qee qhov kev hloov kho, muaj. Yog tias tsis yog, tsuas yog ib qho yuav tsum ua nrog cov txheej txheem ntawm kev sau cov ntaub ntawv tseem ceeb.
Cov Ntaub Ntawv Thib Ob yog dab tsi?
Yog tias cov ntaub ntawv tau sau los ntawm cov ntaub ntawv uas twb muaj lawm xws li Cov Ntawv Xov Xwm, Xov Xwm Kev Lag Luam lossis lwm lub koom haum uas tau sau cov ntaub ntawv rau lawv lub hom phiaj, cov ntaub ntawv yuav yog cov ntaub ntawv thib ob rau tus kws tshawb fawb lossis tus neeg tshawb xyuas. Ntxiv mus, cov peev txheej uas muab cov ntaub ntawv thib ob tuaj yeem sau cov ntaub ntawv rau tus tswv lub hom phiaj tshwj xeeb. Cov ntaub ntawv no yuav tsis raug kho raws li lub hom phiaj ntawm tus kws tshawb fawb. Qhov tseeb, cov ntaub ntawv thib ob tsis tau sau nrog lub hom phiaj ua kom tiav qhov kev txaus siab ntawm tus kws tshawb fawb tab sis ntawm lwm tus tswv cov ntaub ntawv. Yog li ntawd, nws yog qhov tseeb tias cov ntaub ntawv thib ob rau tus kws tshawb fawb yuav yog cov ntaub ntawv tseem ceeb rau tus tswv ntawm cov ntaub ntawv.
Nws yog qhov nthuav heev kom paub tias cov ntaub ntawv tseem ceeb tuaj yeem hloov mus rau hauv cov ntaub ntawv thib ob los ntawm kev ua haujlwm ntawm cov ntaub ntawv tseem ceeb. Hauv qhov tshwj xeeb no, cov ntaub ntawv tseem ceeb, uas tau sau los ntawm tus kws tshawb fawb, tau hloov kho kom nws tuaj yeem siv cov ntaub ntawv hloov kho tam sim ntawd rau nws lub hom phiaj. Hauv qhov no, nws tsis yog siv cov ntaub ntawv tseem ceeb, zoo li lawv, tab sis hloov cov ntaub ntawv. Nws yog qhov tseeb heev, tias thawj cov ntaub ntawv tseem ceeb dhau los ua cov ntaub ntawv thib ob rau tus tswv tom qab ua haujlwm ntawm cov txheej txheem txheeb cais. Los ntawm kev siv cov ntaub ntawv thib ob, cov nqi yuav raug tshem tawm. Sib nrug los ntawm cov ntaub ntawv sau los ntawm cov xov xwm, cov ntaub ntawv thib ob kuj tuaj yeem tau txais los ntawm cov ntaub ntawv sau tseg hauv kev xam phaj lossis kev tshawb fawb. Qhov no qhia tau hais tias muaj ntau qhov sib txawv ntawm cov ntaub ntawv tseem ceeb thiab theem nrab. Tam sim no cia peb suav qhov sib txawv ntawm cov hauv qab no.
Dab tsi yog qhov txawv ntawm Cov Ntaub Ntawv Tseem Ceeb thiab Thib Ob?
• Cov ntaub ntawv tseem ceeb yog cov uas tsis tau sau ua ntej, thiab tau sau rau lub hom phiaj ntawm koj qhov kev tshawb nrhiav tab sis, cov ntaub ntawv thib ob (rau koj) yuav raug sau raws li qhov xav tau ntawm tus tswv txoj kev tshawb xyuas.
• Kev siv cov ntaub ntawv thib ob yog qhov tsim nyog yog tias lawv tuaj yeem ua qauv raws li koj qhov yuav tsum tau ua, tshwj tsis yog lwm yam, muaj lub hom phiaj tshwj xeeb ntawm kev tshawb fawb cov ntaub ntawv tseem ceeb txawm tias lub sijhawm thiab tus nqi.
• Kev sau cov ntaub ntawv tseem ceeb tuaj yeem raug nqi kim heev piv rau kev sau cov ntaub ntawv thib ob.
