Test-retest reliability (are measures consistent).Concurrent validity (correlation between a new measure and an established measure).If there is a relationship between two variables, we can make predictions about one from another.Some uses of Correlations Some uses of Correlations Remember, in correlations we are always dealing with paired scores, so the values of the 2 variables taken together will be used to make the diagram.ĭecide which variable goes on each axis and then simply put a cross at the point where the 2 values coincide. When you draw a scattergram it doesn't matter which variable goes on the x-axis and which goes on the y-axis. As you climb the mountain (increase in height) it gets colder (decrease in temperature). An example of negative correlation would be height above sea level and temperature. A negative correlation is a relationship between two variables in which an increase in one variable is associated with a decrease in the other.An example of positive correlation would be height and weight. When one variable increases as the other variable increases, or one variable decreases while the other decreases. A positive correlation is a relationship between two variables in which both variables move in the same direction.
There are three possible results of a correlational study: a positive correlation, a negative correlation, and no correlation. Correlation Definitions, Examples & Interpretation Correlation Definitions, Examples & InterpretationĬorrelation means association - more precisely it is a measure of the extent to which two variables are related.
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