What is a decision variable
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A decision variable is a variable that represents possible choices or alternatives in a decision-making process. It is typically used in mathematical modeling to represent unknown quantities that need to be determined in order to optimize a decision or outcome. Decision variables can be discrete (e.g. yes/no decisions) or continuous (e.g. quantities that can take any value within a range). They are a fundamental component of mathematical optimization and are crucial in identifying the best course of action in various scenarios.