The LS-estimator in nonlinear regression problems is an important statistical estimator problem.
非线性回归的LS估计问题是一类重要的统计问题。
Some statistical test methods on "fat tail" distribution of time series are obtained by using properties of extreme value theory and extreme index estimator under large sample.
使用极值理论和极值指数估计量的性质，在大样本的情况下得到序列分布“肥尾”现象的检验方法。
As for those statistical indicators needed to use sample survey to attain data this article discusses program of drawing sample and constructing estimator simply.
对于需要通过抽样调查获得数据的统计指标，简要讨论抽取样本和构造估计量的方案。
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