A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Every survey finding published by Pew Research ...

Statistical significance is a critical concept in data analysis and research. In essence, it’s a measure that allows researchers to assess whether the results of an experiment or study are due to ...

Most people have decades of experience looking at graphs. We see them in television reports, books, magazines, presentations at work, and on the stock market apps on our phones. On the surface, ...