Convergence of 100 different Monte Carlo (MC) simulations on a consistent solution, indicated by an exponential reduction in the standard deviation (σ) between the 100 means calculated for random composites of n = 40 events. The number of simulations within each MC increases along the x-axis, from 5 to 200,000 (calculated values are indicated by diamond markers). An exponential fit to these data are plotted (solid line), along with the value of the Pareto principle (i.e., the 80:20 rule), calculated from the fit, which indicates how many simulations are required for 80% of convergence to occur denoted by the asterisk marker on the fit, along with the corresponding x and y-axis positions.