Yintoni a isampula yesaveyi

Xa ukufunda iimpawu luphawu yento ayixhomekekanga zonke iiyunithi zoluntu luphela, kodwa kuphela inxalenye ethile yayo. Oku kuvumela ukwenza uphando isampulu ngokoindawo ekhethiweyo uchaze ngokwaneleyo izinto xa bebonke kwi naluphi utsalo ethile inkalo okanye impahla.

Ukukhetha into uYo- okuba ngokwaneleyo ukuba amele zonke unit behlolisisa, umsebenzi kufuneka ihlelwe ngendlela ethile.

Kukho iindlela zemveli eziliqela ukuba asasaze isampula yesaveyi kwi bonke abantu ngokubanzi, ezona ziphambili ukuba ezi zilandelayo: indlela kwaye ukuguqulwa ngqo. Le ukhetho lokuqala lisetyenziselwa kwiimeko apho kuyimfuneko ukungqinisisa okanye ukucacisa idata afunyenwe ngenxa yokuba esweni rhoqo. Kwimeko yesibini kubhaliwe emiselwe imveliso yexabiso kwe uvavanyo osemqoka kulo lonke umthamo bonke abemi. Kuyimfuneko ukuba uyithathele ingqalelo into yokuba ayizizo zonke izinto kukuvumela ukuba isicelo ngokupheleleyo kwindawo Luqikelelo andise iziphumo ezifunyenweyo isampula labantu ngokubanzi. Ngoko ke, xa kusenziwa, ndafumana ngokufanelekileyo ngokubanzi Uqikelelo ukusetyenziswa lokuphumla, ezinokuthi zisetyenziswe ukuze bakuthathele ingqalelo ubungakanani inxalenye litheni walo ulahlekiso nokubala ngokupheleleyo nomyinge, kwaye, ukuba kuyimfuneko, kwaye ukwabelana isici.

Xa uphando yenziwa ongaphumiyo kuchaphazela uluntu loMzantsi Afrika, kodwa inxalenye yayo kuphela, ukuze ekugqibeleni babe iimpazamo isampula yesaveyi, nto leyo ebangela ukwahluka iziphumo ukusuka amaxabiso ayinyaniso. Ngaloo cell ukuba izinto ezimbini ezinkulu ukuba nimqumbise ubugqwetha eziphumo zokuphela konyaka;

• asanelanga iimeko zobugcisa zesifundo, ebizwa ngokuba yi-nemposiso yesampulu;
• impatho embi yemigaqo, leyo zinganxitywa njenge ongathandani kwaye ngokwenkqubo kukhetho kweeyunithi zophando.

Isampula yesaveyi kwi-manani isetyenziswa kakhulu ngokubanzi. Kulo mzekelo, inkcazelo enokuthenjwa izibonelelo zokuphanda, imali-mali kunye nokunciphisa iindleko. Akuqinisekisi representativeness uphando ngokwesayensi Ukukhetha isandi ABAPHENDULI lesaveyi.

Ukuziqhelisa, isampula yesaveyi kwenziwa ikakhulu kwiindawo ezikhethwe kwi ngendlela random okanye regionalized. Kwimeko yokuqala inika amathuba efanayo ukuba isampuli ufumana olunye okanye kwelinye icandelo. Ukuba into uphando emva kokufumana ulwazi malunga awabuyisele abantu ngokubanzi, ngoko isampuli ejikelezayo kuthiwa re. Kungenjalo, ukuba uphindaphindo-free. isampuli Distributed amiliswe ngenxa lwahlulo labemi kwinani kwimimandla (amaqela) ngokuxhomekeke kubunjani phawu wafundela. Isicelo entsha yokuzenza yokukhetha efanelekileyo kuvumela phambi abameli kwiqela ngalinye labantu ekhethiweyo.

Xa sincokola ngayo, ngoko kule meko kufuneka uqiniseke ukuba ukuthobela le miqathango ilandelayo njengoko isampula yesaveyi kufuneka ihlelwe:

• inani leeyunithi kwisampulu kufuneka nkulu ukuqinisekisa ekufumanekeni iipateni ezinqwenelekayo;
• kumele ukuba zichithe siseko equiprobable ukufumana into nganye kwisampulu;
• kufuneka usebenzise zonke inxalenye single zasendle kunye nabantu ekujoliswe kulo.

Oku kuzakuvumela ukuba kuncitshiswe uphando, ukufumana ulwazi oluthembekileyo imibuzo yakho.