Also called Experimental or Relative Frequency Probability A particular event has a percentage between 0 and 1. There can not be a 0% likely impossible event, and no 100% possible event.
We are dividing the # of events that occur by the number of trials. # of times it occurs/ # of trials
Empircal probability is NOT 100% accurate because it depends on the # of times that you done trials. It gets closer to 100% accuracy the more trials you do, but it will never be 100% accurate
For 100% accuracy, go to Theoretical Probability