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Frequency Plots

Frequency plots are a visual tool used to analyze numerical data by showing the pattern of how often different values occur. Frequency plots provide us with a picture of the shape, range, and center of the data, as well as where the data falls relative to targets or specifications. The most common types of frequency plots are histograms and dot plots. Histograms use bars to represent how many times a value (or range of values) has occurred. Histogram: Dot plots use x’s or dots to show when a value has occurred. Dot Plot: The shape of a frequency plot helps to determine what strategy to follow to make improvements to a process. There are many different shapes which indicate various strate

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