What is the predicted cost used in the calculation of state transportation aid?

An analysis of transportation statistics has confirmed a strong correlation between the average number of bus miles per pupil traveled each day and the average cost per pupil mile.  Based on this correlation, a curvilinear regression analysis is computed to predict the cost per pupil mile, based on the number of miles per pupil per day for each district.  Each district has a unique predicted cost factor (5 CSR 30-261.040 (8)).