Last week I forwarded the observation by several experienced keno managers that the computerized systems produced a higher percentage winning rate for the player than the manual selection process they replaced. (It is fair to point out that many players feel the opposite is true.) Is there a set of circumstances that will produce both observations? Maybe so.
It is clear that computerized systems produce more straight ticket play and less way ticket play than the older mechanical systems. This is the result of several factors: The players themselves in general are less informed about way ticket play than previously, as are many keno writers. It is also easier to mark straight tickets than way tickets on the computer, and many players are unsure as how to mark a computer way ticket. It is a provable fact that straight tickets (without duplication of numbers) produce winners at a higher rate than way tickets. Thus, the swings in house p.c. are less severe than in a game with high way ticket action. Keno games with high way ticket action produce more small winners, but fewer big winners than straight ticket action. This may result in the perception by long-term way ticket players who have switched to straight ticket play on the computerized systems that they are not winning as often as before.
Another factor is that computerized systems do not seem to produce as many repeating numbers as a random mechanical system. A truly random draw will produce 25 percent repeaters each game on average.
Mechanical systems are biased toward producing slightly more repeaters, while psuedo-random generators (unless they are very sophisticated) may produce slightly fewer repeaters.