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数学英语 23 What are the Range and Standard Deviation?

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(156) / 评论(0)

数学英语

SSS 2011-10-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(223) / 评论(0)

Scientific American(十)月

VOA标准英语2011--Syrian Opposition Groups Try to Meld Divergent Approaches

Syrian Opposition Groups Try to Meld Divergent Approaches As the Arab League moves closer to Syria's opposition, differences in both aims and approach among anti-government forces are coming to the fore. Syria's opposition is united on one point: the

发表于:2019-01-13 / 阅读(104) / 评论(0)

VOA标准英语2011年(十一月)

【电影预告片填空】分歧者

You nervous? Were you, at your test? No. I was terrified. The only way our society can survive is for each of you to claim your rightful place. Today, you will take a test that will help you discover who you truly are. The future belongs to those who

发表于:2019-01-23 / 阅读(111) / 评论(0)

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