Variance Estimation in the Swedish Consumer Price Index
针对瑞典消费者价格指数中产品和销售点独立抽样产生的二维交叉分类样本，推导了基于设计的方差公式，给出了数值估计和计算步骤，并讨论了估计结果对实际分配的影响。
In large parts of the Swedish Consumer Price Index, products and outlets are sampled independently, yielding a two-dimensional, cross-classified sample. In this article, a design-based variance formula is derived by exploiting the general theory for cross-classified sampling. Numerical variance estimates are given, along with a description of some of the detailed procedures involved in their computation. Finally, the implications of these estimates on the actual allocation are discussed.