3. Scatter Diagrams and High-Low Cost Estimation Assume the local Pearle Vision has the following information on the number of sales orders received and order-processing costs. Sales Month Order-Processing Costs Orders 1 3,000 $132,320 2 1,800 80,600 3 4,400 193,120 4 2,800 131,040 5 2,300 111,640 6 600 32,960 7 2,000 100,000 The data was plotted on a scatter diagram as following: order processing costs $250,000 $200,000 $150,000 $100,000 $50,000 So 0 1,000 2,000 3,000 4,000 5,000 Please visually check the scatter diagram. Using the information from representative high-and low-volume months, develop a cost estimating equation for monthly production costs. Please show your steps and calculations.