22 · ARL Statistics 2006–2007
aRL sTaTisTics inTeRacTive ediTion
The ARL Statistics are available through an interactive edition on the Web, supplementing previously available data
from 1992–1993. Maintained and supported by the Geospatial and Statistical Data Center at the University of Virginia,
this site offers researchers access to ARL Statistics with documentation.4
The site offers maps and graphics depicting current library trends. For the particularly adventurous, the site links to
an interactive graphics and statistics page, allowing users to manipulate their data queries. One may chose univariate,
bivariate, or multivariate statistics in addition to a vast array of selections with which to customize a query. The
interactive pages also include options for regional aggregates, customized samples of observations, simple rank order
tabulations of data, and the ability to create ratios of any two variables. These and other capabilities are located at
The ARL Statistics datafiles since 1908 can be retrieved in spreadsheet format from http://www.arl.org/stats/
The ARL Statistics and Measurement Program Web site is located at http://www.arl.org/stats/.
For more information on the ARL Statistics Interactive Edition, see Martha Kyrillidou, “To Describe and Measure the Performance of North
American Research Libraries,” IFLA Journal 27 (2001): 257–63.