mean=平均值 proportion=比例 sampling distribution of the sample mean 样本均值抽样分布 样本均值的抽样分布即所有样本均值的可能取值形成的概率分布。例如，某高校大一年级参加英语四级考试的人数为6000人，为了研究这6000人的平均考分，欲从中随机抽取500人组成样本进行观察。若逐一抽取全部可能样本，并计算...
distribution and sample size in relation to shape of sampling distributions Definition of the standard error of the mean Z-transformation when the population standard deviation is known Approximate Z-scores for large sample sizes Use of the Students t-statistic when the population standard deviation ...
samplingdistributions抽样meansmeandistribution Chapter 5: Sampling Distributions for Means Population Distribution The population distribution of a variable is the distribution of its values for all members of the population. ‐this is also the distribution of the variable when we choose one individual fro...
Definition:TheSampling Distribution of the Meanis the mean of the population from where the items are sampled. If the population distribution is normal, then the sampling distribution of the mean is likely to be normal for the samples of all sizes. Following are the main properties of the samp...
The sampling distribution for the mean (or any other parameter) is a distribution like any other, and it has its own central tendency. The mean of the sampling distribution is often denoted {eq}\mu_{x} {/eq}. Intuitively, the expectation is that the possible sample mean should be close...
Therefore, if a population has a mean μ, then the mean of the sampling distribution of the mean is also μ. The symbol μM is used to refer to the mean of the sampling distribution of the mean. Therefore, the formula for the mean of the sampling distribution of the mean can be ...
网络均值分布 网络释义 1. 均值分布 所谓的均值分布(Sampling distribution of mean)﹐乃抽样平均值的分布。例如我们以100个编号1-100的圆球﹐每次抽样取出五 … xstatistics.blogspot.com|基于2个网页
上传人:无知者有罪·上传时间:2012-06-02 0% 0% 0% 0% 0%
mean v.[T] 1.(词语等)表示...的意思,作...解释 2. 意指,意谓 3. 意味着,即是 4. 意欲,打算;怀有 5. 预定;注定;指定 6. 引起,造成 v.[I] 1. 怀 distribution n. 1.分发,分配 2.散布,分布 3.分配;分布 4.(商品)运销,经销,分销 5.按比例分配;分配法;分发方式 6.分配物,配给物;分...
For the sampling distribution of sample means, what is the relationship between the population mean and the mean of all possible sample means of size 25?? They are different by one standard error of the mean.They are not equal.They are both normally distributed.They are equal. 相关知识点: ...