what is the Xmax distribution in powers what is power law head estimator how to find power law tail calculate power law head calculate power law tails what is xmax for powerlaw calculate power law head with xmax calculate xmax for power law heads powerlaw calculate power law head distribution power law tails how can i calculate power law tails power law tail estimate power law estimate xmax how do i figure the xmax of power law heads calculate power law tails what is the estimate xmax for power law tails how to find power law tail how to find xmax in power law heads how to estimate power law tails what is the power law of power law heads