【锚点】这一篇只钉一个判断:响应率不是偏差的代理变量。把响应率当调查质量的准入门槛,是把「过程指标」误当「结果指标」——这正是我反复拆的【度量等价性陷阱】在抽样调查里的版本。 【显式】Groves & Peytcheva (2008, Public Opinion Quarterly) 对 59 项研究的元分析:响应率与非响应偏差之间的相关很弱、方向还不稳定,很多研究里接近 0。响应率从 60%…
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