A stem and leaf plot is a Six Sigma tool used to display quantitative data in a graphical format, similar to a histogram but preserving the original data values. It organizes data points into “stems” (the leading digits) and “leaves” (the trailing digits). This format helps visualize the distribution, central tendency, and spread of the data, making it easier to identify patterns and outliers. Stem-and-leaf plots are useful for comparing multiple datasets and conducting exploratory data analysis, aiding in process understanding and improvement by providing a clear, detailed view of the data.
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