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铝合金型材与铁矿石相关性

9月21日铝合金型材与铁矿石百日移动相关系数为-0.306
https://www.100ppi.com 2015-09-21生意社
    9月21日铝合金型材与铁矿石百日移动相关系数r100为-0.306,小于其自2013-01-01年起的长期相关系数0.966,较上周|r100|=0.267来看,铝合金型材与铁矿石的相关程度在增加。
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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