Mathematics
Mathematics, 22.10.2020 17:01, kiarajack456

A study revealed a strong, linear, positive association between the amount of shampoo used and the length of hair. Another study revealed a strong, linear, positive association between amount of conditioner used and the length of hair. When the data were combined, the association became negative. What is this an example of?

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A study revealed a strong, linear, positive association between the amount of shampoo used and the l...

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