收缩估计量, 缩小估计式

by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(176) / 评论(0) 分类 数学英语

By Yi Suli Detroit, Michigan 23 May 2007 A detail of some artwork in the exhibit The world's fast-growing megalopolises often grab headlines, but another urban phenomenon is having just as much of an impact on the planet. Many cities around the world

发表于:2019-01-07 / 阅读(184) / 评论(0) 分类 2007年VOA标准英语(五月)

He forecasts the economy will shrink by 3.5% this year, and to put it into context that is a big downward revision from his prediction in November of a shrinkage of 1.25%. But he did say the economy will start to recover by the end of this year. And

发表于:2019-02-06 / 阅读(136) / 评论(0) 分类 英伦广角
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