Help with a statistics question please?

Question

Suppose a mathematician computed the expected value of winnings for a person playing each of seven different games in a casino. What would you expect to be true for all expected values for these seven games?

Answer 1

If they are all games offered in casinos the EVs should all be measurable and negetive.  There are exceptions like video poker though.  You can find house advantages and other valuable gaming info and statistics at wizardofodds.com