kb/data/en.wikipedia.org/wiki/Correct_sampling-0.md

title	chunk	source	category	tags	date_saved	instance
Correct sampling	1/1	https://en.wikipedia.org/wiki/Correct_sampling	reference	science, encyclopedia	2026-05-05T12:22:06.312596+00:00	kb-cron

During sampling of granular materials (whether airborne, suspended in liquid, aerosol, or aggregated), correct sampling is defined in Gy's sampling theory as a sampling scenario in which all particles in a population have the same probability of ending up in the sample. The concentration of the property of interest in a sample can be a biased estimate for the concentration of the property of interest in the population from which the sample is drawn. Although generally non-zero, for correct sampling this bias is thought to be negligible.

== See also == Particle filter Particle in a box Particulate matter sampler Statistical sampling Gy's sampling theory

== References ==