What are the three strategies of sampling?

The three strategies of sampling in CBRN (Chemical, Biological, Radiological, and Nuclear) reconnaissance operations are indeed random, systematic, and judgmental. Each of these approaches serves a unique purpose and offers specific advantages based on the operational context.

Random sampling involves selecting sampling locations or items in a manner that each choice has an equal probability of selection. This method is valuable for eliminating selection bias and ensuring that the sample represents the broader area or population accurately.

Systematic sampling refers to the selection of samples based on a predetermined systematic approach, such as taking samples at regular intervals or specific locations. This method helps ensure that the samples cover the entire area of interest comprehensively and can be more efficient than random sampling in certain scenarios.

Judgmental sampling relies on the expertise and knowledge of the individual conducting the sampling to make informed decisions about where and what to sample. This strategy is particularly useful in complex or hazardous environments where prior experience and situational awareness can greatly enhance the quality of the samples collected.

Understanding these strategies allows operators to choose the most appropriate method for the specific circumstances they encounter during reconnaissance operations, enhancing the reliability and interpretability of the sampling results.