For example if a player knows the house edge in blackjack is 0.6% he can assume that for every $10 wager original wager he makes he will lose 6 cents on the average. The reason that the house edge is relative to the original wager, not the average wager, is that it makes it easier for the player to estimate how much they will lose. While this can vary, the standard deviation on slot machines are very high. Slot machine standard deviation based on just one machine.Slot machine range is based on available returns from a major manufacturer.Standard deviation depends on bet made.Assuming player plays the house way, playing one on one against dealer, and half of bets made are as banker.Las Vegas single deck rules are dealer hits on soft 17, player may double on any two cards, player may not double after splitting, one card to split aces, no surrender.