The disadvantages are that it's expensive to collect, time consuming and needs a large sample size to be accurate.
缺点是，它价格昂贵，以收集，耗时和需要大量样本大小是正确的。
Patterns are hard to spot because even when researchers use a large sample size, only a much smaller number of people will get cancer.
即便是选取更多的试样人群，这种局面也很难说清，因为毕竟只有很少部分的人会患上癌症。
Because the likelihood ratio test has very good properties, especially for large sample size problem, the P-value function with this method is approached the true function.
因为似然比检验有着非常好的性质，特别是对大样本量问题，该方法求解出来的p值函数与真实p值函数非常逼近。
Nassim Nicholas Taleb: the field of statistics is based on something called the law of large Numbers: as you increase your sample size, no single observation is going to hurt you.
塔勒布：统计学学科的基础建立在所谓大量数字的规则性上：只要你增大样本容量，没有任何单个的观测结果能损害到你的理论。
My simulation ran 500 processes, to be sure to have a large enough sample size to be mathematically relevant.
我的模拟程序运行了500个流程，以确保有足够多的示例大小是相对精确的。
Does the sample size of the population, is it large enough compared to the population as a whole.
人群样本大小，足以大到与整个人群相比吗。
A second explanation could be that the sample size was not large enough to detect the relationship between these variables.
第二种解释可能是样本规模不够大以致无法检测这些变量间的关系。
Thus, because we have such a large and diverse sample size, including women from 40 sites across the nation, our results can be generalized to a healthy population.
因为我们应用了大量不同样本，包括国家的40个地区的妇女，我们的结果可以推广到健康人群。
It is possible that the sample size is not large enough to be significant or skewed in some way.
可能样本量不够大，因而得出的结论不具有统计学意义，或者说在某种程度上是有偏颇的。
The first key technique is ocean application oriented visual modeling and radial accuracy testing for middle and large size sample data sets.
第一项关键技术是面向海洋应用的中、大尺寸采样数据集的可视化建模与径向精度检测。
By measuring the skull size and volume of a large sample of tigers, lions, leopards and jaguars, they found that the tiger has a bigger brain than its big-cat Cousins.
通过测量大的老虎、狮子、豹和美洲豹样本的头骨尺寸和体积，他们发现，老虎有一个比它的大猫表亲更大的大脑。
There are usually three main features about the pilot plant test sample:large mass and large grain size of samples, difficulty to control the sample grade.
半工业选矿试样一般有三大特点：质量大、矿岩石样粒度大及控制送样品位难度大。
However, this research sample size smaller, still need to multicenter, large sample, the long-term clinical observation confirmed this conclusion.
但是本研讨样本量较小，尚需多中心、大样本、临时的临床察看证明本结论。
With the rapid development of computer 3d graphics and the increasing need of large size and high quality texture in recent years, sample-based texture synthesis became a hot research area.
随着近些年来计算机三维绘图能力的飞速提高和对大尺寸高质量纹理的强烈需求，基于样图的纹理合成成为热门研究领域之一。
This means that, over a large enough sample size (number of hands played), the casino will generate net profits of four and a half cents on every dollar wagered on the game.
这意味着，如果次数够多(玩牌的数量)，每个牌局赌博下来赌场的净利润是4.5%。
The sand consists of relative large size particles, with only 15% sample being formed into mineral aerosol.
沙土较粗，只有1 5 %的沙尘颗粒可以形成矿物气溶胶；
The sand consists of relative large size particles, with only 15% sample being formed into mineral aerosol.
沙土较粗，只有1 5 %的沙尘颗粒可以形成矿物气溶胶；
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