A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Many of Pew Research Center’s survey analyses show relationships between two ...

This appendix provides an overview of the data sources used in the report. It then describes statistical methods used to summarize differences between men and women, including regression analysis ...

Regression is a statistical tool used to understand and quantify the relation between two or more variables. Regressions range from simple models to highly complex equations. The two primary uses for ...

Survival analysis anticipates the expected lifespans of individuals as well as the timing of other events. Learn about its pros and cons.

Linear models, generalized linear models, and nonlinear models are examples of parametric regression models because we know the function that describes the relationship between the response and ...