# Does variance do any good to gambling game makers?

People always like to evaluate the variance, but is there any way for variance to be interesting to the gambling game makers?

In another word, what is a pratical gambling game that involving some distributions that is relating to variance other than the normal distribution?

• Anyone would like to answer the second interpretation? – Victor Sep 30 '13 at 19:41
• As far as I know, there are no casino games whose distribution is normal, because they all rely on discrete events (cards, dice, roulette wheels, etc.). Over time the central limit theorem kicks in, but that's for all distributions. – vadim123 Sep 30 '13 at 19:41

Here is an example that shows variance and not just odds can matter in the design of a gambling game: suppose you had two gamblers who were flipping coins against one another with fair odds for \$1 a flip. One of the gamblers has \$10 and the other has \$100. If someone goes broke the game is over.