英语翻译文章主要是讲social media data的优缺点当其用在科学研究中的时候.讲缺点的时候有这样一句话：We will begin by talking about sampling problems.A sampling frame is often impossible to creat.Except in certain limited circumstances it is possible to get a definitive list of email addresses,web pages,etc.This means that no unbiased sample is possible and most samples using NSM are convienience samples.
问题描述：
英语翻译
文章主要是讲social media data的优缺点当其用在科学研究中的时候.讲缺点的时候有这样一句话：We will begin by talking about sampling problems.A sampling frame is often impossible to creat.Except in certain limited circumstances it is possible to get a definitive list of email addresses,web pages,etc.This means that no unbiased sample is possible and most samples using NSM are convienience samples.
答
翻译这两句话,我觉得采用意译较妥.
我们先讲讲抽样中的问题.抽样的框架, 即在什么范围内抽取样本,往往很难被确定. 除了在极个别的情况下,要想确定一份“完整”的电子信箱地址,网站等等是不可能.这表明所有的样本都有偏差,绝大多数采用NSM抽取的样本不能算作随机抽样.