The table below shows the closing monthly stock prices for Amazon.com and Google during 2011. Calculate the simple three-month moving average for each month for both companies.
| AMZN |
GOOG |
| 169.64 |
600.36 |
| 173.29 |
613.40 |
| 180.13 |
586.76 |
| 195.81 |
544.10 |
| 196.69 |
529.02 |
| 204.49 |
506.38 |
| 222.52 |
603.69 |
| 215.23 |
540.96 |
| 216.23 |
515.04 |
| 213.51 |
592.64 |
| 192.29 |
599.39 |
| 173.10 |
645.90 |