If you look at the dice rolls that generate these losses you'll find that they're all different.

Jarich: I think that explains the issue I was seeing. You can lose with a craps roll on the come out roll, and then win the next round with a winning odds bet on a 6 OR a winning odds bet on an 8, and the net win will still be the same. Basically different roll combinations are likely to yield the same net win/loss result. I'm sure I'll find some to be fairly common.

Daruma: Thanks for putting up the results of Math::Random vs. int(rand). When you look at the probabilities of the various outcomes, and compare them with the actual real-life probabilities, although they both have fairly normal distributions, the Math::Random yields a better result. 

Math::Random                int(rand)        
roll    occ    prob        roll    occ    prob
2    271    2.71%        2    270    2.70%
3    533    5.33%        3    606    6.06%
4    876    8.76%        4    849    8.49%
5    1129    11.29%        5    1172    11.72%
6    1364    13.64%        6    1362    13.62%
7    1640    16.40%        7    1632    16.32%
8    1390    13.90%        8    1402    14.02%
9    1101    11.01%        9    1079    10.79%
10    876    8.76%        10    838    8.38%
11    540    5.40%        11    535    5.35%
12    280    2.80%        12    255    2.55%

real life    
roll    prob
1    2.78%
3    5.56%
4    8.33%
5    11.11%
6    13.89%
7    16.67%
8    13.89%
9    11.11%
10    8.33%
11    5.56%
12    2.78%

[download]
Thanks for all the help so far. Now I guess it comes down to a random number issue. Are there any perl modules, or different techniques I can use to get the rolls as random and close to real-life as possible, or is Math::Random likely as good as it will get?

Thanks for the continued help!

In reply to Re: Re: Re: Re: check my logic & a random number issue by rmckillen
in thread check my logic & a random number issue by rmckillen

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