The real calculation that needs to be made is what pack is
better on a per credit basis.So, a quick bit of math reveals:
60x15 = 900
99x09 = 891
...which means that there is an aproximate ratio of 15/9 (15 SP for every 9 PSP) ...so the real question is this: what yeilds a better drop rate; 15 SP or 9PSP's ??
going off the current estimate of 8.2% chance per PSP and 6.3% chance per SP (which I will round to 8% and 6% to allow a small margin of error) then:
PSP: 0.08x09 = 0.72 (72%)
SP: 0.06x15 = 0.90 (
90%)
Ergo,
per 900,000 credits SP offer a better chance of a UR~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Having said all that I would have thought PSPs would be about 30K cheaper.
If we assume that there is a 2.5% UR drop rate
per Rare slot (and, in the case of PSP's the slots are independant) than that would mean, per rare Slot PSP's have a 5% chance to drop a UR and SP would have a 2.5% chance.
The chance of double UR would thus be 0.025x0.025= 0.000625 (which is 0.065%)
Now if that were true then PSP would be better per credit spent; they are after all, a doubling of chance for an extra 33% cost.
SP: 15x0.025 = 0.375 (37%)
PSP: 09x0.05 = 0.45 (
45%)
This way of thinking seems intuitive, but does not seem to match the current data. (EDIT: I have just assumed 2.5% here for demonstration. Looking at the OP post, 3-4% seems like a more relaible estimate)
Bioware could of course end this discussion by telling us how the calcuation is made, but failing that, we are probably going to need a lot more accurate date to decipher how UR's get dropped.
Modifié par smashthings, 04 septembre 2012 - 02:11 .