What is it?

Probability is a measure of the likelihood of an event to occur. It’s also used to refer to a field closely related to Statistics.


Notation and Definition

On most text books, the probability of an event is referred as . This value takes a range of for any possible condition. For a simple context, one can calculate the probability of an event with:

The total number of outcomes is closed related to the sample space, which is the set of all possible results to occur for any event.