There must be guiding role and practical significance for precision estimating of actual house property area surveying.
对于实际的房产面积精度的合理估算具有一定的现实意义和指导作用。
Dummy variables can only describe the discrete changes of price index, for instance, using dummy variables in sales off-season can not provide upper precision estimating result.
价格指数的变化是连续性的，而虚拟变量只能描述价格指数的离散变化，比如在销售淡季虚拟变量法就不能提供精度较高的分析结果。
Still, estimating the impact of a stronger yuan on inflation with any precision is difficult.
尽管如此，很难确切估计人民币走强对通胀的影响。
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