An experiment is a process used to determine the probability of an event occurring in the future. In finding probability, an experiment is an action that can be repeated infinitely many times and has a variety of results called outcomes. Even rolling a die can be considered an experiment. Experiments are repeated several times to collect data, and each repetition is called a trial. For example, if a die is thrown $100$ times, each throw is considered a trial. An experiment is usually performed to estimate the theoretical probability of a particular outcome.