Computes the natural slope based on total time (cost) to produce the first n units, time (cost) required for the first unit and total units produced.
natural_slope_est(T, t, n)
# Estimate the natural slope for 250 units when the time for unit # one took 80 hours and the total time for all 250 units took # 8,250 hours. natural_slope_est(T = 8250, t = 80, n = 250)#> [1] -0.1603777## [1] -0.1603777