Felipe Lessa wrote:
On Mon, Oct 27, 2008 at 8:15 AM, Janis Voigtlaender
<[EMAIL PROTECTED]> wrote:
That is of course true (and was the topic of heated discussion with my
fourth grade math teacher), but does not explain 2.5 -> 2.
If you round to odd instead of round to even, then 4.5 rounds to 5,
Well, of course I did not learn to round to odd. I learned to round .5
to above, but not to do repeated rounding.
So we would never have either of
2.45 -> 2.4 -> 2
2.45 -> 2.5 -> 3
as you suggest.
Instead, always in one go:
2.45 -> 2
Because of the 4, whereas any digit following it would be ignored:
2.4x -> x
In fact, by your explanation, you would have:
3.46 -> 3.5 -> 4
Which is most odd. 3.46 is definitely closer to 3 than to 4.
--
Dr. Janis Voigtlaender
http://wwwtcs.inf.tu-dresden.de/~voigt/
mailto:[EMAIL PROTECTED]
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