In this short video, Pew Research Center researchers explain how they overcame these obstacles to produce the Centerโsย wide-ranging new survey of 1,001 American Muslims.
Citizens of European Union countries have the right to move between EU countries. As of 2015, nearly 20 million people, or about 4% of the EUโs birth population, lived in a European country in which they were not born.
The first video in Pew Research Centerโs Methods 101 series helps explain random sampling โ a concept that lies at the heart of all probability-based survey research โ and why itโs important.
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