in reply to Re4: Filthy Floats
in thread Filthy Floats

This is new to me, up to now I always rounded .5 up. But you seem to be right, e.g. Mathematica rounds in that way. The reason for this is that the rounding should not give a statistical bias - as far as I understand it.

You understand it correctly.

If your number ends in exactly 5 then you should round it up half the time and down the other half of the time. You could use any handy rule for this - round to even is an easy one. You could also round the first one you come across up, the next one down and so on.

-- iakobski

In Section Seekers of Perl Wisdom