Showing Improvement

A “Trending Pareto Chart” is very useful in showing how Pareto categories are trending over time. In this case, defective product return rates are trended for three consecutive quarters:

example - trending pareto chart

Pareto Chart Variant Showing Category Trends

Keep in mind with Trending Pareto charts that it’s best to express the numbers in a ratio (in this case, products returned as a percentage of products shipped for each region), unless the time duration of all periods being studied is identical.