Scatter Diagrams and High-Low Cost Estimation From April 1 through October 31, Will County Highway Department hires temporary employees to mow and clean the right-of-way along county roads. The County Roa Commissioner has asked you to help her in determining the variable labor cost of mowing and cleaning a mile of road. The following information is available regarding current-year operations: Miles Mowed Labor Month and Cleaned Costs April 350 $8,000 May 300 7,500 June 400 9,000 July 250 5,500 August 375 8,500 September October 200 5,000 100 4,800 a. Use the information from the high- and low-volume months to develop a cost-estimating equation for monthly labor costs. Monthly labor costs = $ 3,400 + $ 14 X b. Plot the data on a scatter diagram. Using the information from representative high- and low volume months, use the high-low method to develop a cost-estimating equation for monthly labor costs. Monthly labor costs = $ 10,400 + $ 14 x X