查询词典 binomial distribution

Results indicated that aphids fed on fresh bamboos by aggregately distributing, and their predators in bamboo forests were separately collected in different parts, main of which were in accord with negative binomial distribution and Polya-Eggenberger distribution, it was proved that some natural enemies in some sample sites were spraying extensively from single plot to around places, the population density of bamboo aphids was proved to be stable in a regular time.

在竹林中主要符合负二项式分布和 P-E 核心分布，为不均匀的聚集分布，存在由点片向四周扩散的现象，频次分析和聚集度指标的分析结果基本一致，其中瓢虫的聚集程度不及另外2种天敌的明显。

Methods According to the Bayesian conjugate prior distribution principle, the estimating methods of prior parameters of the conjugate beta distribution Be of the binomial distribution was given by writing the SAS programs.

根据贝叶斯共轭先验分布原理，对二项分布的共轭贝塔分布中的α、β两个先验参数的确定方法进行分析比较，编写SAS程序确定先验参数。

We will see how data can be characterized as observed values of random variables and study three important probability distributions: the uniform distribution, the binomial distribution, and Normal distribution.

我们会看到资料如何表现随机变数观测值的特征，并且研读三种重要的概率分布：均匀概率分布，二项分布与正态分布。

Discrete and continuous random variables, theoretical distribution, expected value, binomial distribution and normal distribution, standardizing and normality.

间断性变数总体的理论分布重点掌握二项分布和泊松分布，连续性变数总体的理论分布重点掌握正态分布以及正态分布的标准化。

In this paper, for the number of indemnity taking negative binomial distribution and Possion distribution, we discuss some probability problems in students' safety insurance by the normal distribution of probability theory.

本文主要对理赔人数服从负二项分布和泊松分布，运用概率论中的正态分布讨论学生平安保险业务中的概率问题，如保险公司的赔钱或亏本问题、赔钱的最小值问题、保险公司的获利率和赔偿率与投保人数的关系问题等。

The soil pH, CEC and organic matter content ranged from 7.7 to 8.6, 11.9 to 28.7 cmolkg^(-1), and 3.0 to 27.9 gkg^(-1), and followed normal distribution, log-normal distribution, and negative binomial distribution, respectively. These three properties were significantly affected by land use type, landform, and soil type.

结果表明：黄土高原小流域土壤pH、CEC和有机质分别介于7.7~8.6、11.9~28.7cmolkg^(-1)和3.0~27.99kg^(-1)，分别服从正态分布、对数正态分布和负二项分布。3种土壤性质随地形、土地利用方式和土壤类型的不同差异很大。

The spatial distribution parameters, parameters of Iwao model and Taylor's power law were used to analyze the spatial pattern of the lavae of Argopistes tsekooni Chen in glossy privet. The results showed that its spatial pattern was negative binomial distribution, with colony as its basis component and its colony distribution was random.

应用空间分布参数、Iwao回归法和Taylor幂法进行分析表明，女贞瓢跳甲幼虫在大叶女贞上呈负二项分布，分布的基本成分为个体群，且个体群为随机分布。

We presented a method to compute the premium coefficient for each level of the scale when the claim frequency distribution is assumed to conform negative binomial distribution or the nonparametric mixed poisson distribution, the theoretic models of bonus-malus systems are applied to the practical bonus-malus systems model with limited scale by this way.

提出了当索赔次数服从负二项分布和非参数混合泊松分布时确定奖惩系统各等级费率系数的方法。

The negative binomial distribution, gamma distribution, and log-normal distribution were chosen as error distributions according to log-linear regression of variance versus log-mean of CPUE.

根据鲐鱼单位捕捞努力量渔获量数据呈正偏，以及CPUE均值与方差在对数尺度下的线性关系，选择了负二项分布、伽马分布与对数正态分布作为误差分布。

Then, forecasting return is accomplished. Because of being free of probability distribution suppositions for the sale quantity and the return quantity, such as the binomial distribution and the polynomial distribution, the model is more flexible compared to previous forecasting models.

该预测方法的突出特点是，无需像以往预测模型那样假定回收量和前期销售量符合特定的概率分布(例如多项式概率分布或二项式分布)，因此模型具有较强的通用性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。