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.
