东方网记者方翔8月6日报道：北京大学昨天发布《中国民生发展报告2012》，去年我国家庭的平均总支出为3.8万元，比2010年增长了5710元。去年我国家庭现住房完全自有率为84.7%。住房类型上，42.2%的家庭现住房为平房，比2010年调查结果下降了8.5个百分点。全国家庭的平均住房面积为116.4平方米，人均住房面积为36平方米。

DongFangWang reporter FangXiang August 6, report：Beijing university released yesterday《China minsheng development report 2012》，In China last year the average family total expenditures for 38000 yuan，More than 2010 rose by 5710 yuan。Last year our country family housing is completely ZiYouLv is 84.7%。Housing types on，42.2% of the family now housing for bungalow，The results of the survey than in 2010 fell 8.5%。The national family average housing area is 116.4 square meters，The per capita housing area of 36 square meters。

　　家庭平均住房面积超百平米，许多人看到这消息的第一反应，就是不敢相信。毕竟在目前的许多大城市中，住房还是很大的一个问题。然而，仔细一想，这个数据也有其合理性。特别是在农村，以及西部的偏远地区，一个家庭的住房面积远远超过116.4平方米这个数字。

Average family housing area ultra hundred square meters，Many people see this news first reaction，Is can't believe。After all, in the present in many big cities，Housing is a big problem。however，Think carefully，This data also has its rationality。Especially in the countryside，And western remote areas，A family housing area is far more than 116.4 square meters this number。

　　事实上，由统计数据引发的“被平均”问题由来已久，为何科学计算的统计数据与民众直观感受的差别越来越大？很多时候，平均数并不代表“大多数”。从统计学角度看，平均数指标虽精确、敏感，却有“致命弱点”，平均的“乘除法”，很容易掩盖个体之间的差异。造成这种现象的原因，从统计方面来说，就在于有关统计机构选择的是一个总体性指标，它是经过加权计算后得出的综合平均数。在这个平均数下，许多数据都与人们的实际感受有区别。

In fact，By the statistics data of the trigger“Be average”history，Why do scientific computing statistical data and the intuitive feelings is more and more big difference？Most of the time，Average doesn't mean“most”。From the statistics perspective，Average index is accurate、sensitive，has“Achilles' heel”，average“, method”，Very easy to cover up the differences between individuals。The cause of the phenomenon，From the statistics ways，Is that the statistics institutions of the choice is a overall index，It is through weighted calculation from integrated average。In the average down，Many data are with people's actual feeling have distinction。

　　平均数可以反映趋势，但也有“大而化之”的问题。尤其平均数“削峰填谷”，往往使普通百姓尤其是低收入阶层“被平均”，其真实情况容易淹没不显。从百姓感受方面来说，关心数据是否反应了生活现状，判断统计数据真不真实，常常是通过自己日常生活。

Average can reflect the trend，But there are also“In a careless way”problems。Especially average“Peak clipping fill valley”，Often make ordinary people especially low-income class“Be average”，The real situation easily be inundated wouldn't show。From the people feel ways，Concerned about whether data reflect the life situation，Judge statistical data is not true，Often through your own daily life。

　　在这种情况下，“差之毫厘，失之千里”，就算方法正确，不能反映真实情况的统计数据仍然是雾里看花。

In this case，“a，ShiZhiQianLi”，Even if the right strategy，Can't reflect the real situation of the statistical data is still flowers in the fog。