E havun agree fil luh sample scgu havun se mamose tininer. Talaeyva ab 900 thuudors aynd looking ab pelhepgu borms rasels AT luh lonshificant majority rasel (va spal nuve enn a 45%-55% bracket), luh rasels spal abersertuune tudunod.
Oe catnuve har luh "biased population" argument enn leu misorar es no thuuduss manipulatigu dawlmed pa sel occurred (multiple tencu masuden fohva purpose ol aynswering, shal fohva "balfulla stuffing" furay otaer platform/stess...).
Luh temm ferep aynd luh limited temm ol borm seing addayn saru random, no lonshificant erluza (Private Noyt ennvasigu fohva zepom) pavun sel ennfluenced es lusal luh thuudors.
E cayn guarantee thab luh populatigu tap thuudod ves Random enn statistical finp. Ef oe sel 900 random pasons es a sample scgu, piamicipating enn munn borm, luh rasels ser se enndeed coluta villaenn a 3% Errohva Margenn considering luh relatively tine yalapner fund.
Fil mil's Random, mil eu representative bah flesvu. Madar, E essumed a 95% Confidence Caderr, tesh eu a rapub/conservative essumptigu considering pelhepgu ezica borms.
Oe catnuve guarantee thab dawlpe thab har luh fitarno spal random tum. fil luh kapuvern enndeveh fohva pvp uuni/pvp aynd pve/pve uune ves 20/30/50 aynd luh kapuvern ol fitarno harrs ves 10/15/75 luhn mil eu nuve a representative sample aynd luh 95% confidence rules kapu vern. Luh pleeb dyn eu va dusn't lejey whab luh kapuvern eu aynd luhrefore catt camgu essumptions thab luh borm eu nuve biassed. Per se vleduss mil eu nuve eviirum fohva a borm pa se random mil hes pa alvu se a representative sample ol luh demographic thab oe spal ennferring rasels fai