THE contemporary population of the United States seems to have not only a taste but also a distinct genius for statistical research. It does not follow, however, that American mathematicians have at ...

Epidemiology close epidemiologyThe study of the distribution and patterns of health and disease. is the study of the distribution and patterns of health and disease, in and across populations.

Recording every individual in a population is impractical, unnecessary, and expensive (Magurran 1988). Instead community ecologists and scientists in general take replicated samples to represent the ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Ali Hussain has a background that consists of a career in finance with large financial institutions and in journalism covering business. Vikki Velasquez is a researcher and writer who has managed, ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...