An inadequate sample size, a biased sample, a non-unique concept, and scientific flaws in the study are common faults.
样本大小不足,有偏差的样本,非独特的观念和研究中的科学缺陷。
Is it possible for an estimator to be biased in finite sample but consistent in large sample?
一个估计量是否有可能在有限样本中是有偏的但又具有一致性?
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