Correlation regression a If we are interested only in determining whether a relationship eXIStS, we use correlation analysis a If we are interested in predicting the value of one variable( the dependent variable)on the basis of other variables(the independent variables), we use Regression analysis a Dependent variable: denoted Y 口 ndependent variables: denoted x1X2…-Xk11 Correlation & regression ◼ If we are interested only in determining whether a relationship exists, we use correlation analysis. ◼ If we are interested in predicting the value of one variable (the dependent variable) on the basis of other variables (the independent variables),we use Regression analysis .  Dependent variable: denoted Y  Independent variables: denoted X1, X2, …, Xk