What is a correlation? What are the different types of correlation? Why is it important to determine correlation? If anxiety and depression are correlated, what 3 possible directions of causality might explain this correlation?
(1) What is a correlation? What are the different types of correlation? Why is it important to determine?
Correlation indicates the relationship between two variables. Correlation is divided into six types; (1) perfect positive correlation, (2) negative correlation (3) perfect negative correlation, (4) zero correlation, (5) linear correlation, and (6) nonlinear correlation. An increase in one variable sometimes results in an increase in the other variable, and they are stated to be positively correlated. A perfect positive correlation indicates that an increase in one variable is always matched by an increase in the other variable. As the value of one variable increase, the value of the other decrease indicates a negative correlation. A perfect negative correlation results in an increase in one variable that is always matched ...
This solution discusses the various types of correlation, and explains why correlation is important.