本文利用概率密度图对填料粒径进行研究,确定填料粒径符合正态分布.利用等方差检验对PVC粒点缺陷不同水平进行分析,确定不同水平PVC粒点缺陷相关的填料粒径的方差一致性.利用假设检验对不同水平的PVC粒点缺陷的填料粒径均值进行分析,确定不同水平的PVC粒点缺陷相关的填料粒径的均值一致性.利用不同水平PVC粒点缺陷的相关填料粒径的正态分布,确定填料粒径的控制要求.
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