Figure 6: Unit Delivery Costs as a Function of Volume and Postal Density Derived from a Translog Model with USPS Data
Figure 6 only shows unit delivery costs as a function of volume
mnli hypothesis: Figure 6 only shows unit delivery costs as a function of volume premise: Figure 6: Unit Delivery Costs as a Function of Volume and Postal Density Derived from a Translog Model with USPS Data