This bestselling textbook is designed to help students understand parametric and nonparametric statistical methods so that they can tackle research problems successfully. By working through this book carefully and systematically, those who may not have a strong background in mathematics will gain a thorough grasp of the most widely used statistical methods in the social sciences.
Regression Analysis[Page 88]
In the previous section we looked at how the strength of a relationship between two variables can be determined by means of the correlation coefficient r. This coefficient gives us a measure of the general relationship between two variables.
We now turn our attention to a technique closely related to correlation ...