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A correlation coefficient of 1 or -1 would be the highest possible statistical relationship. However, the calculation of correlation coefficients between non independent values or small sets of data may show high coefficients when no relationship exists.

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Q: Which of these correlation numbers shows the strongest relationship?
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What is the meaning of zero correlation?

If variables have zero correlation, they do not have a linear relationship. Zero correlation shows that two things were not found to be related.


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correlation


Difference between Multicollinearity and Autocorrelation?

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