Talk:Celestial Jubilee III/@comment-210.187.208.120-20160315123716/@comment-2098192-20160316131007

Of course it's up to RNG, but once you know the rate it allows you to calculate:

How many kills before you have at least 68% chance of a drop (1 std deviation)

How many kills before at least a 95% chance of a drop (2 std deviations)

How many kills before at least a 99.7% chance of drop (3 std deviations)

this is very useful in measuring the amount of effort necessary for the amount of certainy you are looking for, and allows you to better understand how realistic any given goal may be, and also what your risk/reward for resource spend is. I take a fairly statistical, risk-managed approach, and want to understand the total risk and probable cost (in dollars or time) for what I'm putting in. We all make better decisions that way.