Pareto
Where is Pareto in real-life?
The Pareto principle states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").
Other names for this principle are the 80/20 rule, the law of the vital few, or the principle of factor sparsity.
Language : The most frequently used 20% of the words account for 80% of the word occurrences.
Land Owners : In 1896, Vilfredo Pareto showed that around 80% of the land in Italy was owned by just 20% of population.
World's Income : The richest 20% of the humans have 80% of worlds income.
Health Care : In the US, 20% of the patients use80% of the health care resources.
Errors : In 2002, Microsoft reported that 80% of the errors and crashes in windows and office are caused by 20% of the bugs involved.
Business : 20% of the customers are responsible for the 80% of the profit earned and 20% of the complaints received come from 80% of the customers.
Resources : In home or office, 20 % of the carpet receives 80% of the wear.
Clothing and Life Style : People wear around 20% of their clothes 80% of the times.
Fund Raising: The Pareto principle applies to raising funds: 20% of the donors contribute 80% of the total .