Frequency distribution of each type of large larvae and cocoons conformed to negative binomial distribution.
大幼虫和蛹的分布型均符合负二项分布。
Results The claim numbers in either groups of policy-holders or in overall policies followed a negative binomial distribution.
结果四类投保人和全部保单的理赔次数分布均服从负二项分布。
According to a kind of demand distribution, which can be represented as a negative binomial distribution, the profit maximization model of those products is deduced.
基于一种负二项分布的离散需求函数，推导了易腐品利润最大化模型。
Objective To study the distribution of Oncomelania hupensis with generalized negative binomial distribution, and provide the theoretical support for quantitative study.
目的介绍并应用广义负二项分布研究湖北钉螺的分布规律，为定量化研究提供理论依据。
In the measurement of low-level radioactivity, instead of Poisson distribution, a negative binomial distribution is proposed to denote the probability distribution of actual counts.
在低水平放射性测量中，建议采用负二项式分布代替泊松分布来描述真实测量计数的几率分布。
Then, we studied a few of properties of negative binomial distribution and the uniformly unbiased estimator of the parameter, and it's biological significances were explained in Epidemiology.
给出了负二项分布的分解定理，进一步研究了负二项分布的有关性质及参数的无偏一致估计，以及在流行病学该分布的生物学意义。
The results are as follows: The distribution pattern of larvae is aggregative ( negative binomial distribution) . The aggregation dose not change with the densities of population of leaf miner.
结果表明：烟草潜叶蛾幼虫在田间呈聚集分布，聚集强度不因种群密度的改变而改变。
The results show that the spatial distribution pattern of stephanitis(S. )sevensoni obeys the common negative binomial distribution, the basic component of spatial distribution pattern is colony.
研究表明其分布型属负二项分布，分布的基本成份是个体群。
It is necessity that stratified sampling is used to investigate to the trees and the new stumps, and the spatial distributing pattern of the red turpentine beetles was Negative Binomial Distribution.
红脂大小蠹寄生的树木和新伐桩有分层抽样的必要及其空间分布格局经拟合为负二项聚集分布。
How do I designate a negative binomial error distribution in a GLM using r?
我如何指定在GLM使用负二项式误差分布？
How do I designate a negative binomial error distribution in a GLM using r?
我如何指定在GLM使用负二项式误差分布？
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