If not, you can learn how in the new How to Collect and Analyze Data: A Manual for Sheriffs and Jail Administrators, 3rd Edition by Gail Elias. Reading about calculating the mean, median, and mode will take you right back to your college statistics class, and if you're like me, you can reminisce about how much you enjoyed it. This book will help you determine which data you should collect on a routine basis and how data can be very persuasive in explaining an issue.  "Why Pictures are Worth a Thousand Numbers" explains the graphic representation of the data and how essential this can be.  Even if you are frightened by numbers, you will find this book extremely useful.

You can also order a free print copy, which will be available in late September, from the National Institute of Corrections Information Center.