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\begin{tabular}{|c|c|c|} \hline Year & Earnings & Quarter \\ \hline 2019 & 52 & 1 \\ \hline & 67 & 2 \\ \hline & 85 & 3 \\ \hline & 54 & 4 \\ \hline 2019 & 57 & 1 \\ \hline & 75 & 2 \\ \hline & 90 & 3 \\ \hline 2020 & 61 & 4 \\ \hline & 60 & 1 \\ \hline & 77 & 2 \\ \hline & 94 & 3 \\ \hline & 63 & 4 \\ \hline & 66 & 1 \\ \hline & 82 & 2 \\ \hline & 98 & 3 \\ \hline \end{tabular} Question 1 a Use the data set A to construct the moving average forecasting with k=4 to forecast 2022 quarters b Use the data set A to construct the Exponential Smoothing forecasting with alpha=0.8 to forecast 2022 quarters c Plot the data and the forecasts on a line chart d Which forecast method resulted with more smooth forecast? \begin{tabular}{|c|c|c|} \hline Year & Earnings & Quarter \\ \hline 2019 & 52 & 1 \\ \hline & 67 & 2 \\ \hline & 85 & 3 \\ \hline & 54 & 4 \\ \hline 2019 & 57 & 1 \\ \hline & 75 & 2 \\ \hline & 90 & 3 \\ \hline 2020 & 61 & 4 \\ \hline & 60 & 1 \\ \hline & 77 & 2 \\ \hline & 94 & 3 \\ \hline & 63 & 4 \\ \hline & 66 & 1 \\ \hline & 82 & 2 \\ \hline & 98 & 3 \\ \hline \end{tabular} Question 1 a Use the data set A to construct the moving average forecasting with k=4 to forecast 2022 quarters b Use the data set A to construct the Exponential Smoothing forecasting with alpha=0.8 to forecast 2022 quarters c Plot the data and the forecasts on a line chart d Which forecast method resulted with more smooth forecast

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