Παγκόσμιος πληθυσμός κλπ Global Population

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Understanding the Pareto Principle (The 80/20 Rule)

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Understanding the Pareto Principle (The 80/20 Rule) http://betterexplained.com/articles/understanding-the-pareto-principle-the-8020-rule/ Originally, the Pareto Principle referred to the observation that 80% of Italy’s wealth belonged to only 20% of the population. More generally, the Pareto Principle is the observation (not law) that most things in life are not distributed evenly. It can mean all of the following things: 20% of the input creates 80% of the result 20% of the workers produce 80% of the result 20% of the customers create 80% of the revenue 20% of the bugs cause 80% of the crashes 20% of the features cause 80% of the usage And on and on… But be careful when using this idea! First, there’s a common misconception that the numbers 20 and 80 must add to 100 — they don’t! 20% of the workers could create 10% of the result. Or 50%. Or 80%. Or 99%, or even 100%. Think about it — in a group of 100 workers, 20 could do all the work while the other 80 goof off....
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