The set of all possible outcomes of a probability experiment.

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The set of all possible outcomes of a probability experiment is called the sample space. It is typically denoted by the symbol \( S \) or sometimes \( \Omega \). Each individual outcome within the sample space is known as an outcome or element. For example, if you conduct a probability experiment like flipping a coin, the sample space would be \( S = { \text{Heads}, \text{Tails} } \). In the case of rolling a six-sided die, the sample space would be \( S = { 1, 2, 3, 4, 5, 6 } \).