Section | Chapter 4 Table of Contents |
The Pareto Chart is a bar
chart whose height reflects the frequency or impact of problems. The
bars are arranged in descending order of height from left to right.
The chart is useful in distinguishing the "vital few" from
the "trivial many" problems which could be addressed by quality
improvement teams. It is based on the Pareto Principle which states
that 80% of the trouble comes from 20% of the problems.
1. Identify the problems
and count how many times each one occurs.
2. Create a bar chart by
placing categories on it arranged with the category with the most problems
first, followed by other categories in order form the most problems
to the least problems.
In order to identify the
most important problems, the City Center Hotel asked their housekeeping
staff to complete a survey. Each of the workers filled out a survey
for each shift they worked during the month of May. Below is a Pareto
Chart showing their responses.
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