You must submit Excel file 1. Create a column of moving average (4 cells) 2. Create a column of the center moving average 3. Using the moving average to calculate the moving average for year 7 in winter Gross Revenue Moving Center movin Season Time ear 36 Winter Spring2 27 15.1 37.8 7.6 Summer 3 all year Winter Spring Summer 7 6.9 You must submit Excel file 1. Create a column of moving average (4 cells) 2. Create a column of the center moving average 3. Using the moving average to calculate the moving average for year 7 in winter Gross Revenue Moving Center movin Season Time ear 36 Winter Spring2 27 15.1 37.8 7.6 Summer 3 all year Winter Spring Summer 7 6.9