In my down time, I've been playing with phantom roll and the outcomes with and without jobs in party. Though this, it could be argued, is an act of trying to find patterns where there are none--and in the process ascribing to a certain kind of gambler's fallacy--I found the experiment interesting nonetheless.
This began as an experiment to test AF for what might be hidden effects concerning rolling. I rolled Corsair's roll naked, with full AF and then with each individual piece for a total of 700 times. Though nothing really stood out from AF piece to AF piece, across the board something stayed consistent. The totals?
I: 16%
II: 17%
III: 14%
IV: 15%
V: 20%
VI: 18%
Corsair's lucky number is V, and with a corsair in party--me--it looked like V nudged out the other rolls just slightly. Since I had nothing better to do, I decided to test the other rolls and see how the probability changes when there isn't the specific correlating job in party to when the correlating job is in party. The following rolls were rolled 200x, 100x alone w/o the corresponding job, then 100x w/ the corresponding job.
Choral Roll -- Lucky #2
No Bard in Party
I: 15%
II: 12%
III: 15%
IV: 21%
V: 22%
VI: 15%
Bard in Party
I: 16%
II: 16%
III: 9%
IV: 21%
V: 17%
VI: 22%
It would appear, both with and without a bard in party, the roll is weighted toward IV~VI. Why I'm not sure, especially compared to how the probability for Healer's Roll turned out.
Healer's Roll -- Lucky #3
No White Mage in Party
I: 18%
II: 11%
III: 12%
IV: 18%
V: 19%
VI: 22%
White Mage in Party
I: 30%
II: 12%
III: 18%
IV: 15%
V: 9%
VI: 16%
I thought this was a real oddity: #1 turned up a whopping 30% of the time with a white mage in party. My parties with white mages in the past have supported this: it always seemed like it was easy to hit III--either right at the outside or doubling-up to it--or roll up high to X or XI with a white mage in party. Also, if you'll add up I~III, they appear 60% of the time. Why then, does IV-VI appear 60% of the time in Choral Roll?
Ranger Roll
No Ranger in Party
I: 19%
II: 14%
III: 13%
IV: 16%
V: 20%
VI: 18%
Ranger in Party
I: 15%
II: 20%
III: 15%
IV: 14%
V: 24%
VI: 12%
Why does V in this roll turn up so much? Otherwise nothing really stands out about the probability of this roll.
I decided to test Rogue's roll as well, as a contrast to the numbers put out in Corsair's.
Rogue's Roll
No Thief in Party
I: 15%
II: 24%
III: 23%
IV: 14%
V: 14%
VI: 10%
Thief in Party
I: 13%
II: 10%
III: 23%
IV: 18%
V: 19%
VI: 17%
III shows up a lot for no apparent reason in both tests. IV~VI rolls all went up with thief in party, and in the second they slightly edge out the I~III numbers in how often they turn up. However, nothing about the rolling leads me to think it really changed. However, I've never liked IIIs for this roll; III's always seem to lead to IXs.
From some of the pecularities I've seen here and in xp, it would seem that rolls might be weighted, that they tend to hit certain numbers. Rolls that support this are Corsair's (slightly heavier from IV~VI) and White Mage (heavier from I-III). Choral Roll seems an oddity: why would it be weighted for higher numbers? And Rogue's and Ranger I can't tell much from, except that Rogue's seems to roll heavy on III.
This was a small sampling, of course, and I might need to roll 1000x for each roll to see if anything is weighted or not.
And what are total %s, you ask? (700 Corsair, 200 each of Bard, White Mage, Ranger and Rogue's--for a total of 1500)
I: 17.4%
II: 15.1%
III: 15.8%
IV: 16.9%
V: 18.2%
VI: 16.7%
Looks like it evens out pretty well, except that V still edges out everyone. Though nothing is really conclusive, it is interesting.
I wanted to ask any other Corsairs whether or not they've noticed anything different about how they roll when the corresponding job is in party. If in fact the probability changes, it makes the arguement for using the appropriate job roll all the stronger.
All tests took place in Nashmau with the corresponding jobs at level 75. Roll once > subjob change > roll again. Nothing was ever doubled-up.