(Solved): Methods 5. Consider the following time series data. a. Construct a time series plot. What type of p ...

Methods 5. Consider the following time series data. a. Construct a time series plot. What type of pattern exists in the data? b. Develop the three-week moving average forecasts for this time series. Compute MSE and a forecast for week 7. c. Use $?=.2$ to compute the exponential smoothing forecasts for the time series. Compute MSE and a forecast for week 7. d. Compare the three-week moving average approach with the exponential smoothing approach using $?=.2$. Which appears to provide more accurate forecasts based on MSE? Explain. e. Use a smoothing constant of $?=.4$ to compute the exponential smoothing forecasts. Does a smoothing constant of .2 or .4 appear to provide more accurate forecasts based on MSE? Explain.