相关样本 t 检验的统计前提 (Statistical prerequisites for t-tests for related samples)

1. 在每一种处理条件内，观察都彼此独立。
Within each treatment condition, observations were independent of each other.

2. 差异分数的总体分布是正态的。
Overall distribution of variance scores is normal.

3. 不需要考虑方差同质性。
There is no need to consider homogeneity of variance.