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What is the difference between a positive correlation and a negative correlation?

When a positive correlation is demonstrated this means that any change in one of a pair of associated variables is reflected by a change of the same type, or in the same direction in the other. Increasing the amount of time you spend studying for an exam is likely to increase the mark you obtain.

In a negative correlation, as one variable changes, the other variable changes in the opposite direction. Increasing the amount of time you spend on social activity prior to an exam is likely to lead to a decrease in the mark obtained.




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