Correlations

Correlational Relationship

Establishes whether there is a statistical relationship between two variables.

Positive Correlation

An increase in the value of one variable is associated with an increase in the value of the other variable.

Negative Correlation

An increase in the value of one variable is associated with a decrease in the value of the other variable.

Zero Correlation

Changes in the value of one variable are not related to changes in the value of the other variable.

Scatterplot

A graphical representation showing the relationship between two variables.

Correlation Coefficient

A statistical measure ranging from -1.00 to +1.00 indicating the strength and direction of a relationship between two variables.

Third Variable Problem

A situation where a third variable not being measured may influence the relationship between the two variables being studied.

Magnitude of Relationship

Indicated by the absolute value of the correlation coefficient, representing the strength of the correlation.

Causal Relationship

A relationship where one variable directly influences the other.

Ethical Research Methodology

Research methods that consider moral implications, such as avoiding manipulation of variables when it is unethical.