ABSTRACT

Regression analysis can be described as a form of modelling, for a mathematical model of the relationship between variables is created. Regression allows specific predictions to be made from the IV(s) about the DV for individual participants. Simple regression involves a single IV. Multiple regression allows more than one IV to be used to predict the DV and so improve the accuracy of the prediction. The chapter will only deal with linear regression-in other words, where the relationship between variables when represented on a scattergram is best shown as a straight line. Non-linear regression is beyond the scope of this book.