On Comparing Variances in the Paired Case with Incomplete Data
双侧数据均有缺失时的配对方差比较
Several tests for the equality of variances in the paired case with incomplete data on both responses are compared using Monte Carlo simulations. The main result is the recommendation to use a test due to Ekbohm (1981) for cases with moderate correlations. A new test proposed in this paper may be the best choice when the correlation is high.