 Sigma (operations research)

In operations research (OR), "Sigma" often refers to the concept of "sigma" in the context of statistical analysis and quality control, particularly in Six Sigma methodologies. Here are some key points about Sigma in operations research: 1. **Statistical Significance**: In statistics, "sigma" (σ) typically represents the standard deviation of a population, which measures the amount of variation or dispersion in a set of values.