统计学群体

数学英语 28 How to Use Statistics to Understand Poll Resu

by Jason Marshall In todays article, were wrapping-up our introductory series on fundamental statistics by talking about how knowledge of statistical quantities like the mean and standard deviation can help you understand the significance of the late

发表于:2018-12-07 / 阅读(30) / 评论(0)

数学英语

SSS 2011-05-16

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If you want to guess how many jelly beans are in a jar, you should ask your friends. Then average their answers. Because a group guess is often more accu

发表于:2019-01-08 / 阅读(53) / 评论(0)

Scientific American(五)月

VOA慢速英语2014 专家预测人口或从70亿增长到110亿

AS IT IS 2014-09-24 Experts: Population to Grow from 7 to 11 Billion 专家预测人口或从70亿增长到110亿 Our planet is home to about seven billion people. Since the 1990s, population experts have predicted the number would grow to nine billi

发表于:2019-01-12 / 阅读(34) / 评论(0)

2014年VOA慢速英语(九)月

瘦人对环境有益

也许听到这个消息，有的人会很生气。瘦人对环境有益。但这不是对胖人们的人生攻击，只是提示大家，我们都需要注意健康了。经研究发现，由于食品生产加工和运输等因素，超重的人群比

发表于:2019-02-01 / 阅读(26) / 评论(0)

阅读空间

中国活跃手机网民达7.8亿苹果手机用户最多

The China Internet Network Information Center (CNNIC), together with Internet Society of China, has jointly issued the 2016 Statistical Report on Internet Development in China. 近日，中国互联网络信息中心和中国互联网协会联合发布

发表于:2019-02-08 / 阅读(28) / 评论(0)

英语新闻

英闻天下——164 Working-age Population Decline Challenges China's Growth

Latest figures show, the number of people in their working-age decreased by over 3 million in 2012, accounting for some 69 percent of China's total population. Ma Jiantang, director of State Statistical Bureau, warns this is a serious issue. It is th

发表于:2019-02-21 / 阅读(41) / 评论(0)

英闻天下

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