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amily Planning Brings China Demographic Bonus
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作者 马瀛通 《China Economist》 2007年第4期78-87,共10页
Editorial note Scholars around the world are voicing their criticisms on China’s family planning policy,which,in their opinions,will lead to an unhealthy population structure.This article reviews the concepts of"... Editorial note Scholars around the world are voicing their criticisms on China’s family planning policy,which,in their opinions,will lead to an unhealthy population structure.This article reviews the concepts of"rich before old"and"negative demographic bonus",and concludes that with regards to some indicators such as dependency ratio and demographic bonus,there exists a discrepancy between calculations and reality.The author believes that China will continue to witness a surge of demographic bonus in the future. 展开更多
关键词 amily planning Brings China Demographic bonus THAN
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彩票中奖的概率分析 被引量:1
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作者 赵世贵 姚淑霞 《甘肃高师学报》 2019年第2期6-9,共4页
首先,对彩票的发展、购买及开奖方式进行了调查和统计分析;其次,运用概率统计的方法,结合方案合理性的评价指标,为中奖面以及头等奖一注的奖金期望值设计了一个购买彩票的合理方案,并在此基础上计算出了每一类彩票中奖的概率,以期为彩... 首先,对彩票的发展、购买及开奖方式进行了调查和统计分析;其次,运用概率统计的方法,结合方案合理性的评价指标,为中奖面以及头等奖一注的奖金期望值设计了一个购买彩票的合理方案,并在此基础上计算出了每一类彩票中奖的概率,以期为彩民购买彩票提供一定的指导作用. 展开更多
关键词 奖金期望值 中奖概率 购买方案
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