Isampuli

Ukwenziwa kwesampulu kukukhupha abantu okanye iisampuli ngokupheleleyo.Oko kukuthi, yinkqubo yokuvavanya okanye ukujonga ukuphelela.Kukho iindidi ezimbini zesampulu: isampuli ngokungakhethiyo kunye nesampulu engacwangciswanga.Eyangaphambili kukukhupha iisampulu ukusuka kumgaqo-nkqubo we-randomization.Le ndlela ayinayo i-subjectivity kwaye inokuthi ihlelwe njengesampuli elula ye-random, isampuli yenkqubo, isampuli yeqela kunye ne-stratified sampling.Le yokugqibela yindlela subjective yokutsala iisampulu ngokuxhomekeke kuluvo lomphandi, amava okanyeefanelekileyoulwazi.

Izikhululo zenethiwekhi yeenkonzo ze-EC zingaphezulu kwezixeko ze-60 zelizwe kunye ne-Asia yaseMzantsi.Abahloli abakufutshane banokuthunyelwabonelelainkonzo yesampulu kuwe kwindawo oyalelwe nguwe.

Sithumela umhloli ukuba aqokelele iisampulu kwindawo eyabelwe ngumthengi, njengomthengisi, umzi-mveliso okanye izibuko.Ukongeza, sipakisha iisampulu kwaye siyithumele kwindawo ebekelwe yona, egcina ixesha lakho kunye neendleko.Iisampulu ziya kukhutshwa ngokungqongqo ngokuhambelana nemigangatho eyamkelekileyo yamazwe ngamazwe kunye neemfuno zomthengi.

Qinisekisa ukufaneleka kunye nokumelwa kweesampulu!

Inkqubo yokusebenza kwintsimi yobuchwephesha iqinisekisa ukuba iisampulu zakho zinokufika ngokuchanekileyo nangexesha kwindawo oya kuyo.Emhlabeniiisampulu iyimfuneko kakhulu.

Iinkonzo eziPhakamileyo

Ingakunika ntoni i-EC?

EzoQoqosho: Ngesiqingatha sexabiso lemizi-mveliso, yonwabele inkonzo yokuhlola ekhawulezileyo kunye neyobuchwephesha ekusebenzeni okuphezulu

Inkonzo ekhawulezayo kakhulu: Ngombulelo wokucwangcisa ngokukhawuleza, ukuqukunjelwa kokuhlolwa kwangaphambili kwe-EC kunokufunyanwa kwisiza emva kokuba ukuhlolwa kugqityiwe, kwaye ingxelo yokuhlola ngokusemthethweni evela kwi-EC ingafunyanwa kwi-1 yosuku lomsebenzi;ukuthunyelwa ngexesha kunokuqinisekiswa.

Ukongamela elubala: Ingxelo yexesha langempela yabahloli;ulawulo olungqongqo lokusebenza kwisiza

Ukungqongqo nokunyaniseka: Amaqela aqeqeshiweyo e-EC kwilizwe jikelele abonelela ngeenkonzo zobungcali kuwe;Iqela elizimeleyo, elivulelekileyo nelingenabuqhophololo limiselwe ukuba lihlole amaqela okuhlola kwindawo ngokungenamkhethe kwaye libe liliso kwisiza.

Inkonzo eyenziwe ngokwezifiso: I-EC inamandla enkonzo ehamba kuyo yonke ikhonkco lokubonelela ngemveliso.Siza kubonelela ngeskimu senkonzo yokuhlola elungiselelwe imfuno yakho ethile, ukuze uzisombulule iingxaki zakho ngokukodwa, unikeze iqonga lokusebenzisana elizimeleyo kwaye uqokelele iingcebiso zakho kunye nengxelo yenkonzo malunga neqela lokuhlola.Ngale ndlela, unokuthatha inxaxheba kulawulo lweqela lokuhlola.Kwangaxeshanye, kutshintshiselwano lwetekhnoloji yonxibelelwano kunye nonxibelelwano, siya kubonelela ngoqeqesho lokuhlola, ikhosi yolawulo lomgangatho kunye nesemina yetekhnoloji kwimfuno yakho kunye nengxelo.

IQela loMgangatho we-EC

Uyilo lwamazwe ngamazwe: i-QC ephezulu igubungela amaphondo asekhaya kunye nezixeko kunye namazwe angama-12 kuMzantsi-mpuma we-Asia

Iinkonzo zengingqi: i-QC yendawo inokubonelela ngeenkonzo zokuhlola iingcali ngokukhawuleza ukugcina iindleko zakho zokuhamba.

Iqela lobuchwephesha: indlela engqongqo yokungena kunye noqeqesho lwezakhono kwishishini luphuhlisa iqela lenkonzo ekumgangatho ophezulu.