80_20_rule
kx21 * The 80/20 Rule *

Dr. Juran's observation of the "vital few and trivial many":-

The principle that 20 percent of something always are responsible for 80 percent of the results, became known as Pareto's Principle or the 80/20 Rule.
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... Google Search:

Web Results 1 - 30 of about 3,160,000 for 80 20 rule. (0.32 seconds)

Yahoo! Search:-

TOP 20 WEB RESULTS out of about 4,050,000. Search took 0.19
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then ...the average gas molecule speed for a type of gas is less than than 0.2×(the escape velocity),

http://www.astronomynotes.com/solarsys/atmosesc.htm
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mp21k http://www.astronomynotes.com/solarsys/atmosesc.htm 060513
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