A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Identifying causal relationships from observational data is not easy. Still, ...

Researchers show that renewal forecasting models attenuated by a reverse-sigmoid curve consistently outperform alternatives ...

Featuring detailed examples of computations, as well as computer codes in SAS and Excel perform them, this comprehensive book will be useful to scientists in all fields of application who wish to ...