Yuav ua li cas koj siv snowball sampling?
Yuav ua li cas koj siv snowball sampling?

Video: Yuav ua li cas koj siv snowball sampling?

Video: Yuav ua li cas koj siv snowball sampling?
Video: pob txha ntses daig caj pas lawm yuav ua li cas 2024, Kaum ib hlis
Anonim

Snowball sampling yog qhov chaw tshawb fawb cov neeg koom nrog nrhiav lwm tus neeg koom rau kev xeem lossis kev kawm. Nws yog siv qhov twg muaj peev xwm koom nrog nyuaj nrhiav. Nws hu ua snowball sampling vim hais tias (hauv txoj kev xav) thaum koj muaj lub pob dov, nws khaws ntau "snow" raws txoj kev thiab ua loj dua thiab loj dua.

Nyob rau hauv txoj kev no, dab tsi yog ib qho piv txwv ntawm snowball sampling?

Snowball sampling . Raws li qauv cov tswv cuab tsis raug xaiv los ntawm a kev kuaj ncej, cov qauv snowball muaj ntau yam kev tsis ncaj ncees. Rau piv txwv , cov neeg uas muaj ntau tus phooj ywg yog feem ntau yuav raug recruited rau hauv lub qauv . Thaum siv virtual social networks, ces qhov no txheej txheem hu ua virtual snowball sampling.

Tom qab ntawd, lo lus nug yog, dab tsi yog qhov tsis zoo ntawm cov qauv snowball? Disadvantages ntawm Snowball Sampling

  • Tus kws tshawb fawb tsis muaj kev tswj xyuas me ntsis ntawm cov qauv qauv.
  • Tus neeg sawv cev ntawm tus qauv tsis tau lees paub.
  • Sampling bias kuj yog ib qho kev ntshai ntawm cov kws tshawb fawb thaum siv cov qauv no.

Kuj Paub, puas yog snowball sampling qualitative lossis quantitative?

Qhov xwm ntawm snowball sampling yog li ntawd, nws tsis tuaj yeem txiav txim siab rau tus neeg sawv cev qauv los yog nyob rau hauv cov ntaub ntawv no rau kev tshawb fawb statistical. Txawm li cas los xij, qhov no kev kuaj txheej txheem tuaj yeem siv dav rau kev coj ua zoo kev tshawb fawb, nrog cov pej xeem uas nyuaj rau nrhiav.

Dab tsi yog qhov sib txawv ntawm qhov kev ua piv txwv thiab cov qauv snowball?

Lub hom phiaj sampling yog thaum tus kws tshawb fawb xaiv cov neeg tshwj xeeb hauv cov pej xeem los siv rau ib qho kev kawm lossis kev tshawb fawb. Snowball (Andale 2015): Nrhiav cov neeg los kawm - txheeb xyuas ib lossis ntau chav hauv xav tau pej xeem.

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