# Re: can this code be improved

From:
Patricia Shanahan <pats@acm.org>
Newsgroups:
comp.lang.java.programmer
Date:
Sat, 19 Aug 2006 21:26:39 GMT
Message-ID:
Print Guy wrote:

David Segall wrote:

"Print Guy" <jctown@nb.sympatico.ca> wrote:

Actually, the odds are that if you roll a dice, you will get a 3 or 4
more than any other number

Not true. The chances of rolling any number are exactly one in six if
the dice has been perfectly made. It is true that for real physical
devices there will be a bias but it is unlikely that will be apparent
over the statistics available from Lotto draws. It is obviously
impossible for you to simulate that bias with any computer program.

[OT] 1 http://www.random.org/ offers a source of "true" random numbers
based on the noise you hear when your radio is not tuned to a station.

[OT] 2 A friend spent a week observing a roulette wheel in a casino
and decided he had located a bias. As soon as he started betting the
staff picked up the wheel he was at and dropped in a different one.

Yes, the odds are 1 in 6 if you roll a dice once. But what if you roll
a 6 sided dice 5000000 times? I still think that 4 or 5 will occur
more times... I don't have time to roll a dice that many times, but it
makes sense that it should apply no matter how many times you roll the
die as long as it is a large number of times.

What is your definition of "odds"?

It seems clear that you are not following the frequency interpretation
of probability because in that approach the probability of a four on a
single rolls is defined to be the limit, as N tends to infinity, of the
proportion of fours in N rolls.

You seem to have different opinions about the proportion of fours in a
large number of rolls and the probability of a four on a single roll?

Patricia

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