Based on the actual and forecasted returns shown below what
     Based on the actual and forecasted returns shown below, what is the MAD?    
 
  
  Solution
MAD=absolute difference of ( monthly return - forecast )/n
here n=6
so MAD= 0.507
and answer is C
| Monthly return | Forecast | Absoulute difference | 
| 2.2 | 1.95 | 0.25 | 
| 2.5 | 2.21 | 0.29 | 
| 1.8 | 2.35 | 0.55 | 
| 1.4 | 2.15 | 0.75 | 
| 1.1 | 1.6 | 0.5 | 
| 1.9 | 1.2 | 0.7 | 
| total | 3.04 | |
| MAD | 0.506666667 | 

