Interaction variable

In statistics, an interaction variable is one of variables often used in regression analysis. It is formed by the multiplication of two independent variables.

Usage of interaction variables, while offering some useful data, also raises the issues of multicollinearity.

References

• Using Indicator and Interaction Variables Template:Pdf

External links

• Credibility and the Statistical Interaction Variable: Speaking Up for Multiplication as a Source of Understanding
• Fundamentals of Statistical Interactions: What is the difference between "main effects" and "interaction effects"?

Further reading

• James J. Jaccard, Robert Turrisi, Interaction Effects in Multiple Regression, Sage Publications, 2003, ISBN 0761927425

See also

• Dummy variable
• Interaction (statistics)