The following data relating to units shipped and total shipping expense have been assembled by Archer Company, a wholesaler of large, custom-built air-conditioning units for commercial buildings: Total Units Shipping Month Shipped Expense $2,500 January $3,000 February $2,400 March April $2,700 $3,000 May $4,300 June $1,900 July Required: la. Prepare a scatter graph using the data given above. (Plot cost on the vertical axis and activity on the horizontal axis.)