A new method of making population estimates is introduced and contrasted to the standard ratio-correlation method. The new method, called the "difference-correlation method," produced population ...

Simply collecting data is not enough. You can fill spreadsheets with data, but it's useless if you can't act on it. Regression is one of the most powerful statistical tools for finding relationships ...

In sample surveys of finite populations, subpopulations for which the sample size is too small for estimation of adequate precision are referred to as small domains. Demand for small domain estimates ...

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 ...

Data were coded and entered into the Statistical Package for the Social Sciences (SPSS/PC), Version 10 (SPSS, 1999). Descriptive summary statistics were used to provide a description of motor stroke ...