Give time series a numerical value such as 1 for 1950 and so on , But Give 1956 the value 7 . This will give you regression equation The put in the value of X. The solution of your problem may be by using
| Time |
Stock |
| 1 |
215 |
| 2 |
220 |
| 3 |
200 |
| 4 |
195 |
| 7 |
190 |
| 8 |
185 |
| 9 |
170 |
| 10 |
150 |