题目
题目
单项选择题

位置5的问题 When it is impossible/irresponsible to run a randomized experiment, there is always an approach using observational data that will guarantee a bias-free estimate of the true treatment effect.TrueFalseDon't Know清除选择

选项
A.True
B.False
C.Don't Know
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思路分析
The question asks about estimating treatment effects when randomized experiments are not feasible or appropriate, and whether observational data can always yield a bias-free estimate. Option 1: True. This is incorrect because observational studies are subject to biases such as confounding, selection bias, and m......Login to view full explanation

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