Some good points here. As it happens I have no individuals of indeterminate sex but I do have a significant number with missing birth or death dates which makes the population available for the lifespan statistics small. However, I still cannot see any reason why there should be such a big discrepancy in gender related lifespans and century related lifespans.
David On 16/12/2013 18:41, Kurt Kneeland wrote: > Can't tell you specifically, but it sounds like you have a relatively high > proportion of infant deaths with no sex specified. So you get a bunch of > zeros included in the overall average that are not included in the > male/female averages. > > I don't think an individual is included in the averages at all if either the > birth date or the death date is missing. However, a christening date might > be used in place of a missing birth date, and a burial date might be used in > place of a missing death date. > > -----Original Message----- > From: David Newton [mailto:[email protected]] > Sent: Monday, December 16, 2013 6:05 AM > To: [email protected] > Subject: [LegacyUG] Lifespan, and other, statistics > > Could one of you explain to me how the statistics are calculated? > > In my family file the average lifespan by century never exceeds 17 years > whereas the average male and female lifespans are around 53 and 48 > respectively. These figures seem to be inconsistent with each other but in > the absence of how the calculations are done I cannot be sure what it is > telling me. > > David > > > > Legacy User Group guidelines: > http://www.LegacyFamilyTree.com/Etiquette.asp > Archived messages after Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Archived messages from old mail server - before Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Online technical support: http://www.LegacyFamilyTree.com/Help.asp > Follow Legacy on Facebook (http://www.facebook.com/LegacyFamilyTree) and on > our blog (http://news.LegacyFamilyTree.com). > To unsubscribe: http://www.LegacyFamilyTree.com/LegacyLists.asp > > > > > > Legacy User Group guidelines: > http://www.LegacyFamilyTree.com/Etiquette.asp > Archived messages after Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Archived messages from old mail server - before Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Online technical support: http://www.LegacyFamilyTree.com/Help.asp > Follow Legacy on Facebook (http://www.facebook.com/LegacyFamilyTree) and on > our blog (http://news.LegacyFamilyTree.com). > To unsubscribe: http://www.LegacyFamilyTree.com/LegacyLists.asp > > > Legacy User Group guidelines: http://www.LegacyFamilyTree.com/Etiquette.asp Archived messages after Nov. 21 2009: http://www.mail-archive.com/[email protected]/ Archived messages from old mail server - before Nov. 21 2009: http://www.mail-archive.com/[email protected]/ Online technical support: http://www.LegacyFamilyTree.com/Help.asp Follow Legacy on Facebook (http://www.facebook.com/LegacyFamilyTree) and on our blog (http://news.LegacyFamilyTree.com). To unsubscribe: http://www.LegacyFamilyTree.com/LegacyLists.asp
