费雪一致估计量

数学英语 41 What are Statistics and Estimators?

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(62) / 评论(0)

数学英语

美国国家公共电台 NPR By Returning To Farming's Roots, He Found His American Dream

SCOTT SIMON, HOST: Over the next few months, we're going to hear from people who are in pursuit of the American Dream through the most basic part of life - food. Sometimes, the American Dream involves getting ahead in the world. Today's story isn't l

发表于:2018-12-17 / 阅读(25) / 评论(0)

2017年NPR美国国家公共电台1月

求职面试时的“甜言蜜语”

1. What is important to you in a job? Challenge, the feeling of accomplishment, and knowing that you have made a contribution. 2. Why do you want to work for this organization? Its reputation, the opportunities it offers, and the working conditions.

发表于:2019-01-06 / 阅读(45) / 评论(0)

实用英语

美国国家公共电台 NPR For 'Last Jedi' Director, The Journey To 'Star Wars' Began With Action Figures

(SOUNDBITE OF STAR WARS SOUND EFFECTS) UNIDENTIFIED MAN #1: Three. (SOUNDBITE OF STAR WARS SOUND EFFECTS) UNIDENTIFIED MAN #1: Two. (SOUNDBITE OF STAR WARS SOUND EFFECTS) UNIDENTIFIED MAN #1: One. (SOUNDBITE OF STAR WARS SOUND EFFECTS) UNIDENTIFIED M

发表于:2019-01-16 / 阅读(48) / 评论(0)

2017年NPR美国国家公共电台12月

美国国家公共电台 NPR Russia's Divisive Twitter Campaign Took A Rare Consistent Stance: Pro-Gun

MARY LOUISE KELLY, HOST: All right, earlier this year, special counsel Robert Mueller indicted a Russian troll farm known as the Internet Research Agency. We are now learning more about Russia's influence campaign on social media against the United S

发表于:2019-01-17 / 阅读(35) / 评论(0)

2018年NPR美国国家公共电台9月

CCTV9英语新闻：China's consistent efforts for peacekeeping

Let's take a look at China's role in peacekeeping operations in Africa. China has begun to take part in UN peacekeeping operations from 1990. Since then, over thirty thousand Chinese soldiers have served in 24 UN peacekeeping missions. Chinese peacek

发表于:2019-02-05 / 阅读(64) / 评论(0)

cctv9英语新闻2016年

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