|   
  |       Standardized regression equation  |       Regression coefficient test  |    |
|   Step 1  |       Y = 0.268x  |       SE = 0.109  |       t = 3.222**  |    
|   Step 2  |       M = 0.53x  |       SE = 0.104  |       t = 7.244**  |    
|   Step 3  |       Y = 0.265M  |       SE = 0.089  |       t = 2.769**  |    
|   
  |       +0.127x  |       SE = 0.126  |       t = 1.329  |