In 1988, the National Center for Education Statistics (NCES) developed a private school data collection that improved on the sporadic collection of private school data dating back to 1890 by developing an alternative to commercially available private school sampling frames. Since 1989, the U.S. Bureau of the Census has conducted the biennial…

An Edgeworth approximation for accurate significance probabilities for the Wilcoxon two-sample test is substantially simplified. A method is developed that allows quick calculations of very accurate probabilities. Exact formulas are given for most of the remaining cases, and tables are presented comparing the new simplification to likely…

An ongoing, multiphased project to measure and reduce book loss due to theft was instituted in the main library at the University of Kentucky. Though book loss was significantly reduced, the issue of whether an electronic security system is more effective than a manual checking procedure remains unresolved. (6 references) (EJS)