Stratified random sampling is a method of sampling that divides a population into smaller groups that form the basis of test ...

A simple random sample is a subset of a statistical population where each member of the population is equally likely to be ...

Inelastic light scattering on a sample is measured by Raman spectroscopy. The Raman spectrum is unique to each IR-active substance, and thus, allows for clear identification of the substance of ...

Primetime crime drama meets reality in new forensic research. Scientists are using the new Direct Analysis in Real Time mass spectrometry interface, which has made a guest appearance on the popular ...