Kerrich spent the rest of the war interned at a camp in Jutland and to pass the time he carried out a series of experiments in probability theory. In one, he tossed a coin 10,000 times. His results are shown in the following graph. The tossing of a coin 10 times is an example of a random experiment. Most experiments are subject to Random Variation .
Probability theory is the mathematical approach to quantifying uncertainty or variation.
List the possible outcomes. Let A be the event of one or more heads. Let B be the event that there are no heads. In this example, events A and B are said to be disjoint or mutually exclusive, as they have no outcomes in common. They are also exhaustive, as they cover all possible outcomes.