Correlation and Causation

Correlation and Causation

Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. A relationship between variables shows correlation, but it does not show cause-and-effect. A direct cause-and-effect relationship requires additional controlled experiments. If no consist...

Results of an experiment may suggest that the independent and dependent variables are related.

The relationship between variables, the correlation, can be positive, both variables increase or decrease together. Or negative, one increases and the other decreases.

Additionally, there may be no relationship between the variables. To det...