Bar Chart and Pareto Chart A bar chart and a Pareto chart both use bars to show frequencies of categories of categorical data. What characteristic distinguishes a Pareto chart from a bar chart, and how does that characteristic help us in understanding the data?
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In a Pareto chart, the bars are always arranged in descending order according to frequencies.
The Pareto chart helps us understand data by drawing attention to the more important categories, which have the highest frequencies.