hi total newb here, bitcoin fan and miner, i have join slush pool seem to me at the worst time to see there luck... im just trying to understand something if there is 57eh mined at this time (from google) and slush pool has 4.5 eh witch represent 11% of the world mining power why does slush only end up on average with 7 block a day (from my own statistic) rather than 15 block (11% from is hash power). i know the luck is bad but that much?? i mean it is half the expected return no?
as i said im a total neb so maybe i dont understand how thing work...   
thank you
Eric