In the same lecture, Velasco cited the validity of the survey findings of the country’s two respected research companies – Social Weather Stations
A “good sampling method – which SWS and Pulse Asia have consistently used – assures any survey’s predictive capability,” said Velasco, who was senior lecturer at the College of Mass Communication in the University of the Philippines. He recalled that a survey on Presidential polls in the US rightly predicted the victory of former American President Bill Clinton with only 2,000 respondents due to scientific sampling methods.
From: http://ping.fm/ezTRk
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