1.5 x 3 = 45%

1.5% means 1.5 out of 100, not 1.5 out of 10.Also, the way you did it, the chance of getting x3 +2 atk lv is actually higher than a single +2 atk lv.You have three branchings:Stat 1 - 98.5% - random 1.5% - +2 Atk. lv.Now, assuming you were in the 1.5% for the first stat, you need to repeat this two more times to succeed, so:Stat 2 - 98.5% - random 1.5% - +2 Atk. lv.And the third time:Stat 3 - 98.5% - random 1.5% - +2 Atk. lv.So you need to hit those 1.5% three times in a row, which the chance for that, the way I see it, is 1.5 times out of every 300 rolls.

is this guy for real LOL WHAT AN IDIOT1.5% = 0.015 x 0.015 x 0.015 = 0.000003375 = 0.0003375% chance have fun

Shouldn't it be 0.15, rather than 0.015? 1.000 is 100%, so 1.5% should be 0.15, right? If so, by that logic, it comes off as 0.15 x 0.15 x 0.15 = 0.003375 = 3.375% which doesn't seem exactly right Edit: My bad, 0.15 would be 15%.

.15 is 15% dumbdumbif you want a decent comparisonsin/archer chest piece odds for -int are 1.47%odds for 3x are 1 in hundreds of thousandsI'd suggest going back to high school math if you believe you should get 3x in a few hundred rolls from a 1.5% chance

I also want to point out that 1.5% chance does not mean you have 1.5% chance to get a single 2-atk per rollthe odds of getting only one 2-atk is closer to 5% if you factor it by rolls (1.5 chance is calculated 3 times since it's rolling 3 stats)odds go extremely lower when you start factoring additional atk-2 because of the multiplicative factoranyone who bets should know odds as well, though they use different ratios

What's the math behind getting 4 attack levels, statistically speaking?