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In chapter 3, we use EM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available. 第三章将利用EM算法对基于分组数据的威布尔分布和对数正态分布进行参数估计，并进行模拟表明此方法的可行性与有效性。
The LOGNORMDIST() function returns the cumulative lognormal distribution. 函数返回累积对数正态分布。
The lognormal distribution is widely used in geology to characterize sediment size variations and geochemical element concetrations. 在地质学中，对数正态分布已被广泛用以表示沉积粒度变化特征和地球化学元素浓集情况。
The principle part of such kind of basic De Wijs modeling data is authentically of lognormal distribution. 基本的De Wijs模拟结果主要服从对数正态(lognormal distribution)分布。
The distribution of returns over periods of, say, one year would be better approximated by a lognormal distribution. 以一段期间，比方说，以一年为期间的回报率的分布将更近似对数正态分布。
Furthermore, Willingness to Pay surveys in Huizhou has verified the lognormal distribution assumption of VOT. 惠州市区意愿支付调查验证了假设时间价值为对数正态分布的可行性。
The WR is close to the lognormal distribution, while the WDR is close to the normal distribution. 2个年份的需水量符合对数正态分布，而缺水率呈正态分布；
SUBJECT TERMS Lognormal distribution,Normal distribution,+ Environment factor,Point estimation,Interval estimation. 王炳兴，男，1965年12月生，硕士，副教授，(310035)杭州商学院数学教研室。
The lognormal distribution, like the normal, is completely specified by its mean and standard deviation. 对数正态分布，如同正态，以其平均值和标准差被完全地指明。
The peak currents for metastable pits also follow lognormal distribution and rise with potential. 亚稳蚀孔的峰值电流在恒电位下也服从对数正态分布且随电位升高而增大。
The lognormal distribution is widely used in geology to characterize sediment size variations and geochemical element concentrations. 在地质学中,对数正态分布已被广泛用以表示沉积粒度变化特征和地球化学元素浓集情况。
The B-S model hypothesis bond obeys the lognormal distribution, it have some flaws when using it to price the rate derivatives bonds. B-S模型假定债券服从对数正态分布，利用它来对利率衍生产品定价时有一些缺陷。
The traditional threshold methods are necessary for variables to conform to normal or lognormal distribution, and they have theoretic limitation. 传统计算地球化学异常下限的方法，要求数据服从正态分布或对数正态分布，而且存在计算依据不充分的问题。
The vertical and the horizontal coefficient of consolidation can be adequately modeled by either a lognormal distribution or a gamma distribution. 固结系数的概率分布一般为对数正态分布或伽玛分布。
Besides the common frequency chart.Lorenz curve, and Theil index. the famous Pareto distribution and the lognormal distribution are the authentic proof methods as well. 实证方法除了常见的频数图、洛伦兹曲线和泰尔指数外，还有著名的帕雷托分布和对数正态分布。
On the assumption that investment funds follow lognormal distribution,the reinsurance pricing question affected by investment gains is discussed from the reinsurers' angle. 从再保险人的立场出发;在投资基金服从对数正态分布的假定下;讨论了在投资收益影响下的再保险保费定价问题.
Value of drivers’ commuting travel time has a lognormal distribution of which parameters are 2.73 and 1.09 by using the average of 150 simulation results. 采用150次仿真结果的平均值作为私家车通勤出行时间价值分布函数的参数估计值，得到该分布函数服从参数为2.;73和1
Besides the common frequency chart, Lorenz curve, and Theil index, the famous Pareto distribution and the lognormal distribution are the authentic proof methods as well. 实证方法除了常见的频数图、洛伦兹曲线和泰尔指数外,还有著名的帕雷托分布和对数正态分布。
In order to circumvent the heavy-tailed problem in estimating the conditional autoregressive range model (CARR), the lognormal distribution is considered. 摘要为了解决在估计条件自回归极差模型(CARR)中的分布厚尾性问题，采用尾部呈幂函数衰减的对数正态分布估计CARR模型。
Under the assumption that a geometric process at the start point follows a lognormal distribution, the statistical inference problem for the geometric process is studied. 在假定几何过程的初始分布为对数正态分布的前提下,研究了几何过程的统计推断问题。