We explain the basics of machine learning – using computer programs to identify patterns in data – and how it allows researchers at the Center to analyze data on a large scale.
Polling in different parts of the world can be very challenging, because what works in one country may not work in a different country.
How does the way a poll is conducted influence the answers people give?
Our latest Methods 101 video explores some of the ways these surveys differ from traditional probability-based polls.
The second video in Pew Research Center's Methods 101 series helps explain question wording – a concept at the center of sound public opinion survey research – and why it’s important.
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.