What is it?
is a technique for recording and analysing information relating to a
problem or cause, which easily enables the most significant aspects
to be identified.
A Pareto diagram
is a special form of vertical bar chart, or column chart, which allows
the information to be visually displayed.
When to use it
- Separating the
'vital few' from the 'useful many' problems, (80/20
- Selecting major
- Identifying major
effects and causes
What does it achieve?
" First things
first" is the thought behind the Pareto diagram; the properly constructed
diagram should suggest on which error or activity resources should be
used first to make the best improvement.
Very often the simple
process of arranging data may suggest something of importance that would
otherwise have gone unnoticed. Selecting classifications, tabulating
data, ordering data, and constructing the Pareto diagram have often
served a useful purpose in problem investigation.
process between people takes on many forms, and Pareto diagrams are
a form of language using a display in a commonly understood format.
The continued use of the Pareto diagram enhances communication between
members of staff and through all levels of management.
- List the activities to be analysed
- Calculate totals
- Order totals
- Draw the Pareto
- Interpret results