Sampling yog xaiv cov neeg los yog cov qauv los ntawm tag nrho.Namely, nws yog ib tug txheej txheem ntawm kev soj ntsuam los yog soj ntsuam tag nrho.Muaj ob hom kev sampling: random sampling thiab non-random sampling.Tus qub yog xaiv cov qauv los ntawm tag nrho raws li txoj cai randomization.Cov qauv no tsis muaj kev kawm thiab nws tuaj yeem raug cais raws li qhov yooj yim random sampling, systematic sampling, cluster sampling thiab stratified sampling.Cov tom kawg yog ib txoj hauv kev xaiv cov qauv raws li tus kws tshawb fawb lub tswv yim, kev paub dhau los lossis kev paub txog.
EC kev pabcuam network chaw nres tsheb nyob hauv ntau dua 60 lub nroog ntawm lub tebchaws thiab South Asia.Cov neeg soj ntsuam nyob ze tuaj yeem raug xa mus los muab kev pabcuam kuaj rau koj hauv qhov chaw uas koj tau muab.
Peb xa cov neeg soj ntsuam mus sau cov qauv hauv qhov chaw muab los ntawm cov neeg siv khoom, xws li cov neeg muag khoom, lub Hoobkas lossis chaw nres nkoj.Tsis tas li ntawd, peb ntim cov qauv thiab xa mus rau qhov chaw muab, uas txuag koj lub sijhawm thiab cov nqi.Cov qauv yuav raug xaiv nruj raws li cov qauv kev lees paub thoob ntiaj teb thiab cov kev xav tau ntawm cov neeg siv khoom.
Xyuas kom meej lub hom phiaj thiab kev sawv cev ntawm cov qauv!
Cov txheej txheem kev ua haujlwm hauv kev ua haujlwm kom ntseeg tau tias koj cov qauv tuaj yeem ncav cuag qhov tseeb thiab raws sijhawm.Kev kuaj mob hauv tsev yog qhov tseem ceeb heev.
EC Global Inspection Team
Kev Pabcuam Thoob Ntiaj Teb:Tuam Tshoj Mainland, Taiwan, South East Asia (Vietnam, Indonesia, Thaib, Malaysia, Philippines, Cambodia, Myanmar), South Asia (India, Bangladesh, Pakistan, Sri Lanka), Africa (Kenya), Qaib ntxhw.
Cov kev pabcuam hauv zos:QC hauv zos tuaj yeem muab cov kev pabcuam kuaj xyuas sai sai kom txuag koj cov nqi mus ncig.