动力煤与线材相关性
9月21日动力煤与线材百日移动相关系数为0.413
https://www.100ppi.com 2015-09-21生意社
9月21日动力煤与线材百日移动相关系数r100为0.413，小于其自2011-03-01年起的长期相关系数0.945，较上周|r100|=0.344来看，动力煤与线材的相关程度在增加。
备注：
1、相关系数取值范围为[-1,1]，r>0表示正相关，r<0表示负相关，|r|表示变量之间相关程度的高低。通常|r|大于0.8时，认为两个变量有很强的线性相关性。
2、长期相关系数和r100，均未经显著性检验。
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//flash 方式
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//compare
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