Psychology -> Negative correlation
In contrast to a positive correlation, a negative correlation indicates an inverse relationship between two variables. This means that a high score on variable X is associated with a low score on variable Y, or a low score on variable X is associated with a high score on variable Y. For example, one could predict a negative correlation between the number of police patrolling the streets and the rate of crime in that area. The dots on the scatter diagram would still cluster together but would indicate that as one variable increases in value the other variable decreases in value.
The correlation method is useful to a researcher as it enables the researcher to make predictions. It indicates if a relationship exists between two variables and the strength of the relationship. However, remember that the correlation method cannot demonstrate causation. The researcher cannot assume that because two variables are related to one another that one causes the other.
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