1. In a system comprising a network, a server connected to the network, a set of wells connected to the network, the server programmed to store and execute instructions that cause the system to perform a method comprising the steps of: collecting a set of data from the set of wells; creating a matched data set from the set of data; generating a set of performance metrics from the matched data set; calculating a probability for each performance metric of the set of performance metrics; and, providing a first probability of a first performance metric that indicates whether the first performance metric for a first comparison group is different from the first performance metric for a second comparison group.