Types of Correlation

Positive Correlation

Positive correlation occurs when an increase in one variable increases the value in another.

The line corresponding to the scatter plot is an increasing line.

Positive Correlation

Negative Correlation

Negative correlation occurs when an increase in one variable decreases the value of another.

The line corresponding to the scatter plot is a decreasing line.

Negative Correlation

No Correlation

No correlation occurs when there is no linear dependency between the variables.

No Correlation


Perfect Correlation

Perfect correlation occurs when there is a funcional dependency between the variables.

In this case all the points are in a straight line.

Perfect Correlation


Strong Correlation

A correlation is stronger the closer the points are located to one another on the line.

Strong Correlation

Weak Correlation

A correlation is weaker the farther apart the points are located to one another on the line.

Weak Correlation





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