Cansider the fellswing time senes datb. (a) Conatruct a time series plot. What type of pattern oxists in the dote? The time series plot indicates neither a linear trend nor a seasonal pattom. The time series plot indicates only a seasonal pattern. The time series plot indicates a linear trend and a seasonal pattern. The time series plot indicates only a linear trend. (b) Show the four-quarter and centered moving average values for this time beries. (c) Compute seasonal indexes and adjusted seasonal indexes for the four quarters, (Round your answers to three decimal places.) \begin{tabular}{|c|c|c|} \hline Quarter & Seasonal Index & \begin{tabular}{|} Adjusted \\ Seasonal \\ Index \end{tabular} \\ \hline 1 & & \\ \hline 2 & & \\ \hline 3 & \\ \hline 4 & \\ \hline \end{tabular} Need Help