I just read a Tip Page at Ancestry and they were saying that usually the real age of an ancestor is "closer to the event."

The way I read that is ~ if my ex slave family member, WILLIAM SLAVE, was listed as 60 years in the 1870 Census and listed as 77 in the 1880 census, his " real age," in 1880, would probably be closer to 70, rather than 77, in 1880.

When it comes to the ancestors of African Americans, especially using the 1870/1880 Census Source, what percentage of the time do you think that is true?

Note: The tip page also said it is important to go back over all of your sources and compare them before assigning a final age to your Ancestor Chart.