The following three ways can be used to determine the
probability of an event.
 calculate the probability mathematically
 experiment by checking several random groups
 simulate or act out the events with a model
In many instances, calculating the probability may be too
difficult. And actually experimenting with the actual event may be too
timeconsuming. So, we can use simulation (or modeling) to approximate
probabilities that otherwise might be difficult or impossible to
determine.
The process of simulating an event to approximate probabilities
is called the Monte Carlo method. The method was developed by the
mathematician Stan Ulam during World War II; however, the method gets its name
from the procedures used by casinos to determine probabilities of winning casino
games.
