1. A method of predicting an expected accuracy of a location system in a geographic region comprising the steps of: (a) providing configuration information for the geographic region; (b) estimating signal reception in the region as a function of mobile device location in the region; (c) determining an approximate statistical accuracy of a signal strength pattern as a function of the estimated signal reception in the region; and (d) modeling an expected accuracy of the location system in the region as a function of the configuration information and determined approximate statistical accuracy.