4) Avalon Bagel provides take-out service for a variety of breakfast items. The following table shows the number of orders that have been recently placed grouped by the size of the order in dollars. Size of Order Number of orders $0 to under $5 10 $5 to under $10 12 $10 to under $15 14 $15 to under $20 5 $20 to under $25 9 What is the approximate variance for the order size for this sample