About Pew Research Center’s Spring 2025 Global Attitudes Survey Results for the survey are based on a mix of telephone, face-to-face and online interviews ...

This Pew Research Center report on sources of national pride uses data from nationally representative surveys conducted in 25 countries. For non-U.S.

Discover how to determine the ideal percentage of a population for a representative sample to ensure accurate data analysis with minimal sampling error.

Learn how excluding volatile items in financial and economic data improves long-term trend analysis. Discover examples in corporate earnings and economic indices.

Abstract: Non-uniform sampling techniques enhance the efficiency of data acquisition systems by operating at a sub-Nyquist sampling rate while maintaining a comparable output quality. These techniques ...

Abstract: A non-uniform (NU) sub-sampling receiver (RX) with a NU discrete-time FIR (NU DT FIR) filter can create multiple tunable frequency notches both near and far from the passband via predesigned ...