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- unbias(s)ed ratio estimator 无偏比估计量
- In this paper, the bias of the ratio estimator and the estimateof mean square errors of this estimator with known numerator have been compared and discussed. 给出了分子已知情况下比率估计量的偏差和均方误差以及均方误差的估计，并对两类比率估计量进行了比较.
- Nonreponse is a common seen problem in sample surveys. This paper deal with a ratio estimator by use of double sampling when there exsits nonresponse. 无回答是在抽样调查中常遇到的问题,本文给出了如何用双重抽样来处理存在无回答时的比率估计量。
- unbias(s)ed regression estimator 无偏回归估计量
- The Ratio Estimator with Known Numerator 分子已知情况下的比率估计量
- My simple excel file can already manipulate the existing data to do HSF/HHF arbitrage, golden ratio estimation and much much more ‘functions’ if I want to. 幸而通道底部支持亦在上移中，限制了指数的再跌空间，令大市有机会于未来一、两个月内呈现反覆上升的走势。
- Secondly, this thesis compares the hedging effectiveness of two hedge ratio estimating methods, the Ordinary Least Square (OLS) and Error Correction Model (ECM). 第二，论文在理论上比较了最小二乘法（OLS）与误差修正模型（ECM）两种套期保值率估计方法下的套期保值效果。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- This paper discusses three methods for the signal-to-noise ratio estimation of seismic records,and they are SVD method,statistical averaging method and frequency-domain estimation method,respectively. 估算地震记录信噪比的三种方法有SVD法、统计平均分析法和频率域估算法。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- Implementation of the scheme has resolved the problems on difficult hydrogen nitrogen ratio estimation and difficult control, it has apparent economic and social benefit and worth extend. 该方案实施后,解决了操作人员在实际操作过程中对氢氮比判断难、控制难的问题,具有明显的经济、社会效益及推广价值。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Bias of Approximate Mean Square Errors of the Ratio Estimator and Its Estimator 比率估计量均方误差的近似值及其估计量的偏差
- Answer the following question(s). 回答下列问题。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- C ity policem en；；so nam ed because of their black uniform s. 城里的警察,,因为警察穿黑色的制服,,故名。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- Which journal(s) do you subscribe to? 你订阅哪一种杂志?
