Methods 101 Random Sampling

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=sonXfzE1hvo

The first video in Pew Research Center's Methods 101 series helps explain random sampling – a concept that lies at the heart of all probability-based survey research – and why it’s important. • Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes, and trends shaping America and the world. We conduct public opinion polling, demographic research, content analysis and other data-driven social science research. We do not take policy positions. • Check out http://www.pewresearch.org • Check out our Youtube channel: / pewresearchcenter • Follow Pew Research Center on Twitter: / pewresearch • Or on Facebook: / pewresearch

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