百分率比较 percentage comparisons

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By expressing their water savings in percentages, we were able to show how much water each client was able to save from year to year. These figures showed the client that all their efforts really paid off. Clients were able to save money and meet the requests put forth by EBMUD. When the Water District says to reduce water consumption by 25%, the clients feel good when they can reduce by more than that. Success with Water Management encourages homeowners to save more, because the amount of money and water saved is so easy to see. Showing the percentage rates helps them to see that they can make a difference.
To give you an idea of how this works, let's use Customer 20 as an example. In 1987, his base year, he and his family used 807,912 gallons, in 1988 they used 504,761. The water use in 1988 shows a 37% savings from 1987. In 1989 they used 645,356 gallons, a 20% savings from 1987. In 1990 they used 530,833 gallons, a 34% savings from 1987. In 1991 they used 482,195 gallons, a 40% savings from 1987. In 1992 they used 480,109 gallons, a 40% savings from 1987. If you add these percentages up and divide by five (the total number of years being compared to 1987), you see that the average percentage of savings, for all five years, is 34%. This percentage means, that for five years of drought, Customer 20 was able to decrease their water consumption by 34%. The requirement set by EBMUD for 1988 was a 25% water reduction. They exceeded this amount by 9%, not only in 1988, but each subsequent year of drought thereafter.

若能收集到该词条相关资料的跟帖者给予奖励，根据收集资料的水平给予5～100不等的论坛币，当然也可以谈谈自己的看法、应用背景，相关软件知识，上传资料等等都可以。请大家尽量不要复制一些搜索引擎很容易收集到的资料。

     我每天都会发送不等数量的词条，所以诚邀不同统计背景的各路大侠给予评论。

     欢迎大家多多跟帖！要数量也要质量哟

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关键词：comparisons Comparison percentage percent Paris percentage because efforts savings amount