Journal of Field Archaeology, Vol. 13, No. 4 (Winter, 1986), pp. 477-491 (15 pages) In this paper several considerations are discussed that developed out of the sampling program for the Chevelon ...

Sample size calculations for a continuous outcome require specification of the anticipated variance; inaccurate specification can result in an underpowered or overpowered study. For this reason, ...

Adherence to regulatory limits for mycotoxins in agricultural commodities is important to safeguard consumers and to permit trade in affected commodities across international borders. Reliable ...

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

How many hazmat response teams have a clear and concise system for environmental sampling at every emergency? Most hazmat responders know the importance of environmental sampling at emergencies; not ...

Destructive sampling is a research method that involves intentionally altering or damaging a specimen to address specific scientific questions. Because this process is irreversible, the University of ...