Randomization Tests for Weak Null Hypotheses in Randomized Experiments
Randomization Tests for Weak Null Hypotheses in Randomized Experiments
复制标题
随机实验中弱零假设的随机检验
DOI:
10.1080/01621459.2020.1750415
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发表时间:
2020
影响因子:
3.7
通讯作者:
Ding, P
中科院分区:
文献类型:
--
作者:
Ding, P
The Fisher randomization test (FRT) is appropriate for any test statistic, under a sharp null hypothesis that can recover all missing potential outcomes. However, it is often sought after to test a weak null hypothesis that the treatment does not affect the units on average. To use the FRT for a weak null hypothesis, we must address two issues. First, we need to impute the missing potential outcomes although the weak null hypothesis cannot determine all of them. Second, we need to choose a proper test statistic. For a general weak null hypothesis, we propose an approach to imputing missing potential outcomes under a compatible sharp null hypothesis. Building on this imputation scheme, we advocate a studentized statistic. The resulting FRT has multiple desirable features. First, it is model-free. Second, it is finite-sample exact under the sharp null hypothesis that we use to impute the potential outcomes. Third, it conservatively controls large-sample Type I error under the weak null hypothesis of interest. Therefore, our FRT is agnostic to the treatment effect heterogeneity. We establish a unified theory for general factorial experiments and extend it to stratified and clustered experiments. Supplementary materials for this article are available online.
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DOI:
10.1111/rssb.12290
发表时间:
2018-11-01
影响因子:
5.8
作者:
Fogarty, Colin B.
通讯作者:
Fogarty, Colin B.
DOI:
10.1214/07-aoas151
发表时间:
2008
期刊:
The annals of applied statistics
影响因子:
--
作者:
Zheng,LU;Zelen,Marvin
通讯作者:
Zelen,Marvin
DOI:
10.1214/13-sts454
发表时间:
2014
期刊:
arXiv: Methodology
影响因子:
--
作者:
Arman Sabbaghi;D. Rubin
通讯作者:
D. Rubin
影响因子:
4.5
作者:
P. Aronow;D. Green;Donald K. K. Lee
通讯作者:
Donald K. K. Lee
DOI:
10.2139/ssrn.905026
发表时间:
2008-08
期刊:
Behavioral & Experimental Economics
影响因子:
--
作者:
G. Charness;U. Gneezy
通讯作者:
G. Charness;U. Gneezy