Talk:Sortie/@comment-6384776-20170417082444/@comment-107.77.106.75-20170605162739

None of you lone tenno seem to have a grasp on how statistics work.

20% chance means that ON AVERAGE you should get a riven every 5 days. That does not mean every 5 days you'll get one but that the gaps between rivens should average out to 5. Rivens on days 1, 10, 19 and 20; yup that works. No riven for 80 straight days then 20 consecutive rivens, still averages to a riven every 5 days.

As well, 100 runs is not a representative sample for sortie reward the same way 2 flips of a coin or 6 rolls of a die are going to be off from expected values most of the time. Realistically, you want something like 1000 runs to get a representative sample for sortie rewards.