Two relatively new methods for analyzing herbicide efficacy data are described. Weighted multiple regression using the logit transformation for plant mortality data is illustrated and compared with ...

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 ...

For testing general linear hypotheses in multiple regression models, it is shown that non-stochastically shrunken ridge estimators yield the same central F-ratios and t-statistics as does the least ...