独立双样本检验的Matlab实现，杨润怀，张振，目的：依据独立双样本检验原理，编写matlab程序，自动判断统计方法并给出统计结果。方法：首先判断两组样本是否服从正态分布；如果

单样本t检验 独立样本t检验 配对样本t检验 单因素方差分析 Normal distribution and sampling distribution Normal distribution is made up of individual scores. Sampling distribution is composed of group means. With more groups means, a curve of their distribution would be symmetric. This symmetric curve is not called a normal distribution but rather a sampling distribution of means A sampling distribution is the distribution of a sample statistic that would be obtained if all possible samples of the same size were drawn from a given population.