(PPT, 194KB)

• Pareto Principle
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Joseph M. Juran Pareto principle
In 1941, Juran stumbled across the
work of Vilfredo Pareto and began to
apply the Pareto principle to quality
issues (for example, 80% of a problem
is caused by 20% of the causes). This
is also known as "the vital few and the
trivial many". In later years, Juran
preferred "the vital few and the useful
many" to signal the remaining 80% of
the causes should not be totally
ignored.
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Long-tail - Goodbye Pareto principle, welcome the new distribution
In a 2006 working paper titled Goodbye
Pareto Principle, Hello Long
Tail,Brynjolfsson, Erik; Yu (Jeffrey) Hu, and
Duncan Simester, 2006,
[http://ssrn.com/abstract=953587 Goodbye
Pareto Principle, Hello Long Tail: The Effect
of Search Costs on the Concentration of
Product Sales] Erik Brynjolfsson, Yu (Jeffrey)
Hu, and Duncan Simester found that, by
greatly lowering search engine
technology|search costs, information
technology in general and Internet markets
in particular could substantially increase the
collective share of hard-to-find products,
thereby creating
a longer tail in the
https://store.theartofservice.com/the-pareto-principle-toolkit.html
distribution of sales.
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Pareto principle
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The 'Pareto principle' (also known as the
'80–20 rule', the 'law of the vital few,' and
the 'principle of factor sparsity') states that,
for many events, roughly 80% of the
effects come from 20% of the causes
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Pareto principle
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The Pareto principle is only tangentially
related to Pareto efficiency. Pareto
developed both concepts in the context of
the distribution of income and wealth
among the population.
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Pareto principle - In economics
Even if we take the ten wealthiest
individuals in the world, we see that the
top three (Carlos Slim Helú, Warren
Buffett, and Bill Gates) own as much as
the next seven put together., thus in this
case the rule does NOT apply since the
top 30% (of the ten wealthiest individuals
in the world) own about 50% of the wealth
(of the ten wealthiest individuals in the
world), and not 80% of it, as would be
expected by the Pareto principle.
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Pareto principle - In software
In computer science and engineering
control theory, such as for
electromechanical energy converters, the
Pareto principle can be applied to
optimization (computer
science)|optimization efforts.
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Pareto principle - Occupational health and safety
The Pareto principle is used in
occupational health and safety to
underline the importance of hazard
prioritization
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Pareto principle - Occupational health and safety
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Aside from ensuring efficient accident
prevention practices, the Pareto
principle also ensures hazards are
addressed in an economical order as
the technique ensures the resources
used are best used to prevent the most
accidents.
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Pareto principle - Other applications
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The Pareto principle has many applications in
quality control. It is the basis for the Pareto
chart, one of the key tools used in total
quality management|total quality control and
six sigma. The Pareto principle serves as a
baseline for time management#abc
analysis|ABC-analysis and XYZ-analysis,
widely used in logistics and procurement for
the purpose of optimizing stock of goods, as
well as costs of keeping and replenishing that
stock., pp. 107–108.
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Pareto principle - Other applications
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The Pareto principle was a prominent part
of the 2007 The 4-Hour Workweek by
Timothy Ferriss|Tim Ferriss. Ferriss
recommended focusing one's attention on
those 20% of customers who contribute
80% of the income. More notably, he also
recommends 'firing' – refusing to do
business with – those 20% of customers
who take up the majority of one's time and
cause the most trouble.
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Pareto principle - Mathematical notes
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The Pareto principle is an illustration
of a power law relationship, which
also occurs in phenomena such as
brush fires and earthquakes.
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