Producers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study from the University of Illinois Urbana-Champaign finds ...

Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.

Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), Vol. 61, No. 1, Sample Surveys (Apr., 1999), pp. 187-201 (15 pages) The balanced half sample (BHS) method is a popular method for ...

Several states with extensive water use databases rely upon the census approach. That is, data are collected for all water users withdrawing amounts greater than a specified threshold that varies from ...