# Re: calculating age 1790-1820

> > I hope someone will have the time and patience to explain to me how
> > to calculate ages from charts such as this.
> >
> > 1790 census this man was in the over 16 age group
> > born before 1774
> >
> > 1800 census this man was in age group 26-45
> > born 1755-1774
> >
> > 1810 census this man was in age group 45 and up so he was
> > born before 1765
> >
> > 1820 census this man was in age group over 45 so he was
> > born before 1775
> >
> > 1830 census this man was in age group 60-70 so he was
> > born between 1760 and 1770
> >
> > This man died 1837.
> >
> > This table shows the census year, the age of the man during that
> > census year as enumerated on the census.
> >
> > My question: when was this man born? How old was he when he died?
> > How did you calculate that?
> >
> > fredandfran
>
> born 1760-1765: It's the only time frame that fits all censuses.
> died at age 72-77: known death date - calculated birth date
>
> Kathy Lenerz <lenerz@xxxxxxxxxxxxxxxx>

I'm not arguing the answer, just asking for -- how did you get
there?

For the numeric overachievers, I'm sure it's obvious; for the rest
of us, it's far less obvious and mathematical "proof" that shows
each step would be a useful thing to have.

Cheryl

singhals <singhals@xxxxxxxxx>
.