80-20

10% of punters place 90% of $ bets (Betfair)
15% of private equity investments provide 82% of profits
20% of customers generate 80% of profits (Royal Bank of Canada: 17% deliver 93%)
20% of staff generate 80% of sales
20% of entrepreneurs capture 80% of new business wealth created
20% of countries consume 70% of energy, 75% metals and 85% of timber
20% of authors sell 80% of books sold
20% of thieves collect 80% of loot (crime stats)
20% Richest = 82.70% Income
20% or fewer of a company’s customers are generating positive income while 80% or more are costing the company money
20% of media stars hog 80% of the limelight
20% of scientists create 80% of discoveries
20% of wars caused 80% of casualties
20% of patients use 80% of health care resources
20% of treasures in a museum are displayed more than 80% of the time
20.2% of UK cities house 79.8% of population
80% of crimes are committed by 20% of criminals
80% of your achieved response comes from 20% of your marketing efforts
80% of a manager’s interruptions come from the same 20% of the people
80% of a problem can be solved by identifying the correct 20% of the issues
80% of advertising results come from 20% of your campaign.
80% of an equipment budget comes from 20% of the items
80% of an instructor’s time is taken up by 20% of the students
80% of benefit comes from the first 20% of effort
80% of customer complains are about the same 20% of your products / services
80% of network traffic stays within the LAN while 20% needs to cross the backbone.
80% of our personal telephone calls are to 20% of the people in our address book
80% of our shipments utilize 20% of your inventory.
80% of sales time is spent on 20% of the customers
80% of the decisions made in meetings come from 20% of the meeting time
80% of the outfits we wear come from 20% of the clothes in our closets and drawers
80% of the traffic in town travels over 20% of the roads
80% of what we produce is generated during 20% of our working hours
80% of your annual sales come from 20% of your sales force
80% of your future business comes from 20% of your customers
80% of your growth comes from 20% of your products
80% of your innovation comes from 20% of your employees or customers
80% of your profits come from 20% of your customers
80% of your staff headaches come from 20% of our employees
80% of your success comes from 20% of your efforts
80% of your website traffic comes from 20% of your pages

Sursa: crn.com

One common adage in the IT industry is that 80 percent of all end users generally use only 20 percent of a software application’s features.

In recent months, Microsoft has learned that 80 percent of the errors and crashes in Windows and Office are caused by 20 percent of the entire pool of bugs detected. […]

“One really exciting thing we learned is how, among all these software bugs involved in the report, a relatively small proportion causes most of the errors,” Ballmer wrote in his three-page memo. “About 20 percent of the bugs causes 80 percent of all errors, and — this is stunning to me — 1 percent of bugs caused half of all errors.”

But one analyst said that customers should not come to the conclusion that the 80-20 bug ratio will make it easier for Microsoft to clean up problems with its software. “The 80-20 rule is often believed to be true in most things. […]” said Rob Enderle, research fellow at Giga Information Group.

…are scrise 80% din posturi in 20% din arhiva sa (din iulie 2007 pana in aprilie 2011). 

80% din informatiile folositoare le gasim in 20% din link-urile din “prima pagina”; cum Google returneaza la o cautare normala 10 link-uri “pe prima pagina”, inseamna ca doar 2 ne sunt cu adevarat folositoare, restul… extrem de putin.