The appliance centre sells a variety of electronic equipment andhome appliances. For the last four years the following quarterlysales (in $ millions) were reported. Determine the seasonal indexfor \begin{tabular}{|crrrr|} \hline & \multicolumn{4}{c|}{ Quarter } \\ \cline { 2 - 5 } Year & \multicolumn{1}{c|}{ I } & \multicolumn{1}{c|}{ II } & \multicolumn{1}{c|}{ III } & \multicolumn{1}{c|}{ IV 1 answer