Salary and years of education are typically positively correlated, and grade-point average and the number of hours of television watched per day are typically negatively correlated.
Psychological perspectives
- The strength of an association between two variables is referred to as a correlation in psychology.
- Two variables moving in the same direction indicate a positive correlation. In other words, a positive correlation occurs when a rise in one measure is followed by a rise in another.
- If there is a negative correlation, the variables are moving in the opposite direction. When two variables have a negative correlation, changes in one cause changes in the other and vice versa.
- The correlation between salary and years of schooling is normally positive, but the correlation between grade point average and daily television viewing is typically negative.
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