If you are rolling a d20, 15 "should be" 25% better, not 50% better.
If you are rolling a d15, 15 is 33% better, since it succeeds 100% of the
time and 10 succeeds 66% of the time.
On percentile dice, you would hardly say that 15 is different than 10, since
it only succeeds 5% of the time more often.
You still have to look at the skill number in relation to the range you are tolling
Of course, this is just the simplistic look of "did the roll succeed", not the true examination of rolling a contest. If you are saying that it is very hard to intuit the degree of advantage without crunching the odds, I totally agree. Welcome to statistics!
--Todd
On Wed, Nov 11, 2009 at 1:57 PM, roadsgoeveron <daveolloyd_at_...> wrote:
>
>
> Hi!
>
> I think that the problem is that once they are reduced to numbers, you look
> at it and say wow, my skill of 15 should be 50% better than his skill of 10.
> But this type of issue is probably inherent to any rules set.
>
> Thanks,
> David.
>
>
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