The maximum likelihood estimator for population average treatment effect is proved to be consistent, unbiased and asymptotically normal.
并且证明了在正态分布的假设下，该总体平均因果效应的极大似然估计是相合无偏且渐近正态的。
Low average population densities are characteristics of most underdeveloped countries.
平均人口密度低是大多数不发达国家的特点。
Climate change has raised average temperatures in the Central Highlands region of Kenya, allowing the disease to creep into higher altitude areas where the population has little or no immunity.
气候变化导致肯尼亚中部高地地区平均温度的上升，这使得这种疾病蔓延到高海拔地区。
The average population density of the world is 47 persons per square mile.
世界平均人口密度为每平方英里47人。
As the average age of the population increases, there are more and more old people to care for.
随着人口平均年龄的增长，有越来越多的老年人需要照顾。
To stabilize its population—discounting immigration—women must have an average of two children.
为了稳定人口——减轻移民的影响——妇女必须平均生育两个孩子。
Half the population in India is under 25 years of age, whereas in many developed markets, the average age is about 40.
印度有一半的人口年龄不到25岁，而在许多发达市场，人口的平均年龄大约为40岁。
Because Kaufman studied some writers who lived hundreds of years ago, it is impossible to compare their average age of death to that of the general population.
由于考夫曼研究的一些作家生活在数百年前，因此无法拿他们的平均死亡年龄与全体人口来作比较。
In Africa, average penetration stands at more than a third of the population, and in north Africa it is almost two-thirds.
非洲的手机平均普及率大约为总人口的三分之一，北非则接近三分之二。
The UN Population Fund estimates that people's average age around the world has been raised by more than 20 years.
联合国人口基金会预计，世界人口平均寿命增加了20年以上。
The overall mortality rate three years after the injury was 16%, or about one in six people, compared to average expected mortality in the general population of 5.9%, according to the study.
根据研究，受创三年后的总死亡率为16%，或大约六分之一，比照起来一般人口集中地区的平均预期死亡率为5.9%。
More than half the population of the northern jungle is poor, compared with a national average of 36%.
北部丛林中穷人占一半以上，而全国的平均贫困水平是36%。
The intermediante level of education of rural-urban black migrants has seved to lower the average level of education in both the black population of origin and the area of destination.
乡-城黑人移民不高不低的教育水平导致来源地（农村）和目的地（城市）黑人的平均教育水平下降。
Ni : Average population density in area i. To simplify the analysis, Earth’s surface is divided into a grid of squares i, and the distribution is assumed to be uniform in each.
Ni：指i区的平均人口密度，为了简化分析，地球表面被按照网格分成多个i区，每个区的分布假定是统一的。
The amount of water available per head of population is only a quarter of the global average.
人均水资源仅有全球平均水平的四分之一。
And Texas's population is growing nearly twice as quickly as the national average.
德州的人口增速已经将近全美平均增速的2倍。
The respondents represented a fairly average slice of the U.S. population, with about 29 percent holding a college degree and a median monthly average household income between $3, 000 and $3, 999.
这些受访者代表了相当一部分美国人口的平均水平，其中百分之二十九的人拥有大学学历，家庭月平均收入在3000到3999美金之间。
The average of these estimates suggests that the global population will cross 10 billion by 2085.
这些估算的平均值表明，到2085年，全球人口将超过100亿。
The average population of the world's 100 largest cities now exceeds 6m. In 1900, it was only 700,000.
全世界100大城市的平均人口现在超过了600万，而在1900年仅为70万。
Ethnic Mexicans, whether native or immigrant, are younger on average than Anglos, reducing the average age of greying Arizona's population.
无论是本土的墨西哥人还是移民来的墨西哥人，他们的平均年龄比美国白人的平均年龄要小，而这些人也减少了亚利桑那州老年人口的数量。
People are fleeing the cold: there is a strong correlation between the average temperature in January and population growth, notes Edward Glaeser, a professor of economics at Harvard University.
哈佛大学经济学教授爱德华格雷泽指出，人们趋暖避寒：1月均温与人口增长有着密切的相互关系。
By 2050, the global population is projected to rise to 9 billion, so average per head emissions will have to be lower than 2 tonnes per year on average.
到2050年，全球人口预计将达到90亿，因此，人均排放量必须降到平均每年2吨以下。
Well, the high rate of population growth translates into above-average job growth through a couple of channels.
是这样的，较高的人口增长率通过若干个渠道转化成超过平均水平的就业增长。
This type of "late retirement" is more frequent now as population growth in the United States slows down, and the average age of the citizens increases.
由于美国的人口增长越来越慢，而国民的平均年龄越来越高，这种“晚退休”的情况现在更加普遍。
The army says the profile of its recruits remains above the average for the American population.
陆军表示其新兵的情况超过美国人口的平均水平。
Female turtles have also become smaller on average; bigger individuals have been removed from the wild population and the overall life expectancy of the species has fallen.
雌龟的平均体型变小了；较大的个体已经从野生种群中消失，并且整个物种的预期寿命都已经下降。
Female turtles have also become smaller on average; bigger individuals have been removed from the wild population and the overall life expectancy of the species has fallen.
雌龟的平均体型变小了；较大的个体已经从野生种群中消失，并且整个物种的预期寿命都已经下降。
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