28法则英语PPT.ppt

In the late 1800s, Vilfredo Pareto, an economist, established that 80% of the land in Italy was owned by 20% of the population. This was the first instantiation of a socio-economic law that soon appeared to have universal scope. That is The Pareto principle . The 80/20 Rule means that in any set of things (workers, customers, etc.) a few (20 percent) are vital and many (80 percent) are considered trivial. In Jurans initial work, he identified 20 percent of product defects causing 80 percent of product problems.? It’s well known by Project Managers that 20 percent of work (usually the first 10 percent and the last 10 percent) consume 80 percent of the time and resources. You can apply the 80/20 Rule to almost anything, from the science of management to the sciences of the physical world around us Pareto principle Pareto principle …….. business software health economics In business The distribution is claimed to appear in several different aspects relevant to entrepreneurs and business managers. For example: 80% of a companys profits come from 20% of its customers 80% of a companys complaints come from 20% of its customers 80% of a companys profits come from 20% of the time its staff spend 80% of a companys sales come from 20% of its products 80% of a companys sales are made by 20% of its sales staff   In economics  A chart that gave the inequality a very visible and comprehensible form, the so-called champagne glass effect, was contained in the 1992 United Nations Development Program Report, which showed the distribution of global income to be very uneven, with the richest 20% of the worlds population controlling 82.7% of the worlds income. In software In?computer science?and engineering control theory such as for electromechanical energy converters, the Pareto principle can be applied to?optimizatio efforts.For example, Microsoft?noted that by fixing the top 20% most reported bugs, 80% of the errors and