Re: Population math help!

I should remember to quote the proper numbers when I open my mouth!

I rechecked the growth percentages...It is 1 %.  Immegration amounts to
0.4% of
that.

Donald Hosford

Donald Hosford wrote:

> If you know how, try writing a simple program to do it for you.  Thats
what I
> did on my population calculations.
>
> In my calculations, I have been using a growth rate of 2%.  My source:
 A
> college economics book.  It has the population of the U.S. listed
(from1929 to
> 1982).  By compairing the numbers I concluded that the growth rate was
about
> 2% (close enough for my projects.)   Unfortunatly the book does not
list
> immegration numbers.
>
> Donald Hosford
>
> Brian Burger wrote:
>
> > I'm trying to figure out a reasonable population for my colony of
Santa
> > Maria, and I'm finding that I've forgotten all that high school
math...
> >
> > Population growth is a compound-interest type equation, I think, but
> > damned
> > if I can remember the actual formula. So, given:
> >
> > Initial population of X
> > Average annual growth of Y%
> > Average annual immigration of Z
> > and
> > Years Since Colony Established of Q
> >
> > there must be an easier way of doing this than repeating (X x Y) + Z
> > a number of times equal to Q. (I'm positing a 97-year old colony.
You can
> > understand my desire to find an easier way.) You can't just do
> > q{(xy)+z}, because (xy) is a constantly increasing number.
> >
> > Please help...
> >
> > Embarrasingly inumerate,
> >
> > Brian (burger00@camosun.bc.ca)
> > -- http://www.geocities.com/Area51/Nebula/9774/games.html
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