单词:aggregate population measures
单词:aggregate population measures 相关文章
[00:01.84]3 Listen and complete. [00:06.70]What have the children done for their project [00:10.30]on population? [00:11.96]Listen and complete their sentences. [00:16.14] [01:04.64]4 Listen and complete. [01:08.78]Listen and fill in the missing info
AS IT IS 2015-11-03 More of Us to Go Thirsty As Earth Dries Up Water supplies around the planet are running dry at an alarming rate. Scientists say the world is experiencing a shortage of fresh water. It will only worsen as the population grows and t
The European Union has given the West African country of Mauritania a month to restore constitutional order or face unspecified measures. Lisa Bryant has more from Paris where members of the Mauritanian junta met with E.U. officials on Monday. An E.
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BEIJING, Feb. 22 (Xinhua) -- Chinese brokerage firms saw surging profits in 2014 boosted by easing measures from policymakers, the Securities Association of China (SAC) said. Combined net profits of 120 brokerage firms totaled 96.55 billion yuan (15.
population 母体 sample 样本 census 普查 sampling 抽样 quantitative 量的 qualitative/categorical 质的 discrete 离散的 continuous 连续的 population parameters 母体参数 sample statistics 样本统计量 descriptive statistics 叙述统