Stat Ranger is a free web service that analyzes your GEDCOM file and collects together the most interesting statistics into one place and displays them. Basic statistics, such as the number of each record type found in your database are displayed. This is useful if for no other reason than to make sure the numbers compare to your master database. Stat Ranger also calculates the total number of claims made and determines how many of these claims are documented. It also determines how many of the claims are impossible as determined using the algorithms that are used by Bonkers: The GEDCOM Sanity Checker.
One of Stat Ranger's most interesting features it its ability to group your claims into different categories, these being Parental Relationships, Census Claims, Vital Events, Non-Vital Events, Non-Parental Associations, Names and Attributes. It then presents the totals found for each type, delineated (or perhaps columnized) by source documentation quality as determined by the use of source reference quality fields (QUAY) and source category fields. See the FAQ for more information on these properties and how they are determined. The FAQ also gives you information can be used to beeter implement claim documentation and vastly increase the reliability of your database.
Stat Ranger collects some other interesting statistics on the total numbers of Locations, Photos, External URLs, Immigrants and Nobility Titles. The list will undoubtedly be expanded in the future.
Stat Ranger calculates the average life spans for each century for both men and women, the average age of first marriage for both men and women, and the average number of years per generation. For all of these it also provides you the number of persons over which the average was taken. This is a useful reference because, depending on the database, the total number of persons used may be so small that the average age may not be representative.