8月5日，北京大学发布了《中国民生发展报告2012》，其中提到全国家庭的平均住房面积为116.4平方米，人均住房面积则为36平方米，引起公众关注和质疑。

August 5,，Beijing university released《China minsheng development report 2012》，Speak of the national family average housing area is 116.4 square meters，The per capita housing area is 36 square meters，Draw public attention and questioned。

　　据南方都市报报道，该调查的主要负责人、北京大学社会学系教授李建新回应称，上述数据只是反映全国总体平均数值，包括农村地区。但在另一方面这样的平均数就会掩盖内部巨大的差异，和许多人特别是和城市人群经验很不相符。

According to the southern metropolis daily reports，The survey of the main person in charge、Beijing university professor of the department of social LiJianXin response says，The above data is only reflect the national overall average value，Including rural areas。But on the other hand this average will cover internal huge difference，And many people especially and urban population does not match the experience。

　　事实上，由统计数据引发"被平均”问题由来已久。今年5月，西南财经大学发布了《中国家庭金融调查报告》，其中称“城市家庭人均资产高达200万元”“中国家庭负债平均为6.26万元”等数据亦引起争议。西南财大当时回应，“抽样调查的样本里，非常有钱的人很多，这样一来，平均数就拉高了”，从统计学角度来看，平均数指标看似精确，却也很容易掩盖个体之间的差异。

In fact，By statistical data cause"Be average”history。In may this year，The southwest university of finance and economics released《Chinese family financial report》，Which say“Urban per capita household assets is as high as 2 million yuan”“Chinese family liabilities an average of 62600 yuan”Data also controversial。Southwest filthy when response，“Sampling survey of the sample，Very rich people a lot，so，Average is loud”，From the statistics perspective，Average index seemingly accurate，But it is very easy to cover up the differences between individuals。