这些估算的平均值表明，到2085年，全球人口将超过100亿。
The average of these estimates suggests that the global population will cross 10 billion by 2085.
和欧洲7%的平均值相比，西班牙目前的失业率为13%，失业人口超过300万。
The jobless rate is now 13%, over 3m, compared with a European average of 7%.
人口均值经常写成“x-条形柱”，如果你有一个样本有n个观测者，是从i=1到n和的xi/n，这是平均值。
The population mean is often written "x-bar." If you have a sample with n observations, it's the summation i = 1 to n of xi/n--that's the average.
根据欧盟统计局的计算，到2030年，内伦敦每100名工作年龄人口需要支持的65岁以上人口将少于15人，而欧盟的平均值是38人。
According to Eurostats calculations, every 100 people of working age in inner London in 2030 will have to support fewer than 15 over-65s, compared with an EU average of 38.
一个简单的例子是计算相隔十年的两次人口普查之间的平均值，从而估计第五年的人口。
A simple example is calculating the mean of two population counts made 10 years apart to estimate the population in the fifth year.
一个简单的例子是计算相隔十年的两次人口普查之间的平均值，从而估计第五年的人口。
A simple example is calculating the mean of two population counts made 10 years apart to estimate the population in the fifth year.
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