抽样调查第11讲(系统抽样:估计量方差及方差的估计、方差与排序的关系、不等概情形) 知乎 Template




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tomski抽样调查第11讲(系统抽样:估计量方差及方差的估计、方差与排序的关系、不等概情形) 知乎 coloring