研究两次重复试验三因子全效应随机模型误差方差的齐性检验问题，推导了检验统计量和检验规则的具体表达式。
According to the homogeneity test for error variance on total-effect random model with three factors in double repeated experiment, the specific formulae of test statistics and test rule are deduced.
关于调整印花税对噪声收益波动性的影响，研究方法是方差齐次检验，结果是调整证券交易印花税对小组合的影响是显著的。
The results of the study show that the DBMD models can capture the persistence of return volatility, and reveal the joint dynamic relations between price volatility and trading volume.
关于调整印花税对噪声收益波动性的影响，研究方法是方差齐次检验，结果是调整证券交易印花税对小组合的影响是显著的。
The results of the study show that the DBMD models can capture the persistence of return volatility, and reveal the joint dynamic relations between price volatility and trading volume.
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