Calculator: Verenga Ongororo Yako Yashoma Sample Saizi

Kugadzira ongororo uye kuve nechokwadi chekuti une mhinduro chaiyo iyo iwe yaunokwanisa kumisa bhizinesi rako sarudzo kunoda hunyanzvi hunyanzvi. Kutanga, iwe unofanirwa kuve nechokwadi chekuti mibvunzo yako inobvunzwa nenzira isingarerekere mhinduro. Chechipiri, iwe unofanirwa kuve nechokwadi chekuti unoongorora vanhu vakakwana kuti uwane mhedzisiro inoshanda.

Iwe haufanire kubvunza munhu wese, izvi zvingave zvakanyanya-kushanda uye zvinodhura zvakanyanya. Makambani ekutsvagisa musika anoshanda kuti awane chivimbo chepamusoro, uye yakaderera muganho wekukanganisa uchisvika hushoma huwandu hwevagamuchiri hunodiwa. Izvi zvinozivikanwa sewako saizi yekuenzanisira. Uri samples chimwe chikamu chehuwandu hwevanhu vose kuwana mhedzisiro inopa mwero we chivimbo kusimbisa mhedzisiro. Uchishandisa fomula inogamuchirwa zvakanyanya, unogona kuona ichokwadi saizi yekuenzanisira izvo zvinomiririra huwandu hwevanhu hwakazara.

Kana uri kuverenga izvi kuburikidza neRSS kana email, tinya kusvika kune saiti kushandisa chishandiso:

Verenga Ongororo Yako Sample Saizi

Sampling Inoshanda Sei?

Sampling inzira yekusarudza chikamu chidiki chevanhu kubva muhuwandu hwevanhu kuti vakwanise kuita fungidziro pamusoro pehunhu hwehuwandu hwese. Inowanzoshandiswa muzvidzidzo zvekutsvagisa uye polls kuunganidza data uye kuita fungidziro nezvehuwandu.

Nzira dzinoverengeka dzakasiyana dzesampling dzinogona kushandiswa, kusanganisira:

1. Simple random sampling: Izvi zvinosanganisira kusarudza muenzaniso kubva muhuwandu uchishandisa nzira isina kurongeka, sekusarudza zvisina tsarukano mazita kubva pakarongwa kana kushandisa jenareta renhamba. Izvi zvinovimbisa kuti nhengo yega yega yehuwandu ine mukana wakaenzana wekusarudzwa kumuenzaniso.
2. Stratified sampling zvinosanganisira kupatsanura huwandu hwevanhu kuita zvikwata zvidiki (strata) zvichibva pane humwe hunhu uye nekusarudza sampuli isina kurongeka kubva kune yega yega. Izvi zvinovimbisa kuti sampuli inomiririra zvikamu zviduku zvakasiyana mukati mehuwandu hwevanhu.
3. Cluster sampling: Izvi zvinosanganisira kupatsanura huwandu hwevanhu kuita zvikwata zvidiki (masumbu) uyezve kusarudza muenzaniso wakasarudzika wemasumbu. Nhengo dzese dzemasumbu akasarudzwa dzinosanganisirwa mumuenzaniso.
4. Yakarongeka sampling: Izvi zvinosanganisira kusarudza yega yega nhengo yenhamba yemuenzaniso, apo n ndiyo nguva yesampling. Semuenzaniso, kana nguva yesampling iri gumi uye huwandu hwevanhu huri zana, nhengo yese yegumi inosarudzwa yemuenzaniso.

Zvakakosha kusarudza nzira yakakodzera yekuenzanisira zvichienderana nehunhu hwehuwandu uye mubvunzo wetsvakiridzo uri kudzidzwa.

Chivimbo Chinhanho maringe neError Margin

Muongororo yemuenzaniso, the danho rekuvimba inoyera chivimbo chako chekuti sampuli yako inomiririra huwandu hwevanhu. Inotaridzwa seperesenti uye inotarwa nehukuru hwesample yako uye mwero wekusiyana muhuwandu hwako. Semuenzaniso, chiyero chekuvimba che95% chinoreva kuti kana iwe waizoitisa ongororo kakawanda, mhedzisiro yaizove yakarurama 95% yenguva.

The kukanganisa margin, kune rumwe rutivi, chiyero chehuwandu hwemigumisiro yeongororo yako inogona kusiyana kubva pahuwandu hwechokwadi hwehuwandu. Inowanzo kuratidzwa sechikamu uye inotarwa nehukuru hwesample yako uye nhanho yekusiyana muhuwandu hwako. Semuyenzaniso, tomboti kukanganisa kumucheto kweongororo kuri kuwedzera kana kubvisa 3%. Muchiitiko ichocho, kana iwe waizoitisa ongororo kakawanda, kukosha kwechokwadi kwehuwandu huchawira mukati menguva yekuvimba (inotsanangurwa nemuenzaniso zvinoreva kuwedzera kana kubvisa margin yekukanganisa) 95% yenguva.

Saka, muchidimbu, chiyero chekuvimba chiyero chekuti unovimba sei kuti sampuli yako inomiririra huwandu hwevanhu. Panguva imwecheteyo, iyo yekukanganisa margin inoyera kuti yakawanda sei mhedzisiro yeongororo yako inogona kusiyana kubva kune chaiyo kukosha kwehuwandu.

Sei Standard Deviation Yakakosha?

Iyo yakajairwa kutsauka inoyera kupararira kana kupararira kweseti yedata. Inokuudza kuti huwandu hwemunhu mu dataset hwakasiyana sei kubva kune zvinoreva dataset. Paunenge uchiverenga hushoma saizi yemubvunzo, iyo yakajairwa kutsauka kwakakosha nekuti inokubatsira kuona kuti yakadii chaiyo yaunoda mumuenzaniso wako.

Kana kutsauka kwakajairika kuri kudiki, hunhu muhuwandu hunenge hwava pedyo nekurevesa, saka hauzodi saizi yakakura yemuenzaniso kuti uwane fungidziro yakanaka yezvinoreva. Nekune rumwe rutivi, kana kutsauka kwemaitiro kwakakura, hutsika muhuwandu hunowedzera kupararira, saka iwe uchada saizi yakakura yemuenzaniso kuti uwane fungidziro yakanaka yezvinoreva.

Kazhinji, iyo yakakura kutsauka kwakajairika, iyo yakakura saizi yemuenzaniso iwe yauchazoda kuti uwane yakapihwa nhanho yekurongeka. Izvi zvinodaro nekuti kutsauka kwakakura kunoratidza kuti huwandu hwevanhu hwakasiyana, saka iwe unozoda sample yakakura kuti unyatso fungidzira zvinoreva huwandu hwevanhu.

Iyo Fomula Yekusarudza Iyo Minimum Sample Saizi

Formula yekuona saizi shoma shoma inodiwa kune yakapihwa huwandu ndeiyi inotevera:

Where:

• S = Minimum sampuli saizi iwe yaunofanirwa kuongorora uchipa zvaunoshandisa.
• N = Huwandu hwehuwandu hwevanhu. Iyi ndiyo saizi yechikamu kana huwandu hwaunoda kuongorora.
• e = Margin of Error. Paunoona huwandu hwevanhu, pachava nemuganho wekukanganisa.
• z = Iwe unogona kuva nechivimbo sei kuti vanhu vangasarudza mhinduro mukati mehuwandu hwakasiyana. Kuvimbika muzana kunoturikira ku z-chibodzwa, nhamba yekutsauka kwakajairwa chikamu chakapihwa chiri kure nerevo.
• p = Kutsauka kwakazara (mune ino kesi 0.5%)