\fThe accompanying data file contains 10 observations for t and yt. Expicture Click here for the Excel Data File A 3-period moving average is plotted along with the actual series. 15 14 - 13 - 12 - 11 - 10 - B - 6 7 8 9 10 a. Comment on smoothing. The jagged graph represents the original series and the smoother graph represents its 3-period moving average. The smoother graph represents the original series and the jagged graph represents its 3-period moving average. We cannot tell which graph represents the original series and which its 3-period moving average.b-1. Use the 3-period moving average to make in-sample forecasts. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) t yt 7 14 10 12 10.333 10 12.000 8 10.667 6 10.000 11 8.000 9 14 8.333 10 14 10.333 11