This is a preview. Log in through your library . Abstract Within a survey of mountain forest types in the Swiss Alps, we compared three statistical sampling methods, i.e. stratified random sampling of ...

This is a preview. Log in through your library . Abstract Optimum allocation in stratified random sampling leads to a constrained optimization problem which is usually solved by any of the following ...

Producers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study finds that some testing methods are more powerful at ...

Landscape genetics has emerged as a new research area that integrates population genetics, landscape ecology and spatial statistics. Researchers in this field can combine the high resolution of ...

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 ...

Greg DePersio has 13+ years of professional experience in sales and SEO and 3+ years as a writer and editor. Simple random sampling is a method used to cull a smaller sample size from a larger ...