统计研究 ›› 2001, Vol. 18 ›› Issue (3): 48-50.
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叶阿忠
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YE A-Zhong
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Abstract: The author discussed the problem of multi-phase ratio estimation, put forward an approximate formula and asymptotic unbiased estimate for the mean-square sample deviation of ratio estimate.
叶阿忠. 多阶段抽样比率估计[J]. 统计研究, 2001, 18(3): 48-50.
YE A-Zhong. Ratio estimation of multi-phase sampling[J]. , 2001, 18(3): 48-50.
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