Lean - 基本的分析工具简介(10)

Pareto Chart100% 80%

Costs

600%40% 20% 0%

What A bar chart in which the bars are arranged in descending order, with the largest to the left. Each bar represents a problem (cause). The chart displays the relative contribution of each cause to the total problem.A B C D E F G H

Problems

Why This technique is based on the Pareto principle (80/20), which states that 80% of our problem can be explained by just 20% of the causes. The Pareto chart makes clear which "vital few" problems (causes) should be addressed first.

How List all elements of interest. Measure the elements, using the same unit of measurement for each element. Order the elements according to their measure, not their classification. Create a cumulative distribution for the number of items and elements measured and make a bar and line graph. Work on the most important elements first. Continue for several iterations if data is available or can be measured.

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