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The 80-20 Principle

I.O.U. — Eventually, maybe in late June, I'll develop this page more fully.

This will be a LINKS-PAGE, with summaries (of the main ideas) plus links to pages where you can learn more.


The Pareto Principle – Descriptions, Explanations, Applications


link from Higher Chronicle - http://www.bsu.edu/libraries/ahafner/awh-th-math-pareto.html

Chronicle - http://chronicle.com/blogs/profhacker/the-80-20-principle/31626


I.O.U. — There will be more links here later.



The 80/20 is estimated not calculated, and it's approximate not exact.  Therefore, don't interpret the 80/20 literally.

The 80/20 simply means that "usually, not all things are equal in value."  Sometimes instead of 80/20 an estimated split should be 90/10, or 70/30, or (when values are equal, or at least similar enough) 50/50.

Sometimes "80 + 20 = 100" when you split a whole (= 100%) into categories.   But... the "best 20%" may not produce 80% of results;  instead it might be 25%, 40%, or 90%.