Scatter Diagrams and High-Low Cost Estimation 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: Use the information from the high- and low-volume months to develop a cost-estimating equation for monthly labor costs. Monthly labor costs = Adjust the equation developed in requirement (b) to incorporate the effect of an anticipated 5% increase in wages. Scatter Diagrams and High-Low Cost Estimation 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: Use the information from the high- and low-volume months to develop a cost-estimating equation for monthly labor costs. Monthly labor costs = Adjust the equation developed in requirement (b) to incorporate the effect of an anticipated 5% increase in wages