Ok, so for a newbie in this mining pool buisness, this is what I would love to know:

1) What is Pool luck?
2) How is it calculated?
3) What does it mean for a potential miner/invester in that pool?

Further questions, if any, will be added below.

4) How often should a pool statistically find a block, or how long is the statistic time between each block?
5) How is a pool defined as unlucky/lucky?