The Quarterly Sales for Specific Educational Software Over the Past

Essay

The quarterly sales for specific educational software over the past three years are given in the following table. Compute the four seasonal factors.
$$\begin{array} { | c | c | c | c | } \hline & \text { YEAR 1 } & \text { YEAR 2 } & \text { YEAR 3 } \\\hline \text { Quarter 1 } & 1710 & 1820 & 1830 \\\hline \text { Quarter 2 } & 960 & 910 & 1090 \\\hline \text { Quarter 3 } & 2720 & 2840 & 2900 \\\hline \text { Quarter 4 } & 2430 & 2200 & 2590 \\\hline\end{array}$$