1. A managed print system for analyzing performance of a print device, the system comprising: a computing device; and a computer-readable storage medium in communication with the computing device, the computer-readable storage medium comprising one or more programming instructions for: receiving a black and white print volume variable associated with a print device, receiving a color print volume variable associated with the print device, determining a black and white cost variable associated with the black and white print volume variable, determining a color cost variable associated with the color print volume variable, determining a standard relationship among at least the black and white print volume variable, the color print volume variable, the black and white cost variable and the color cost variable, determining an empirical relationship among at least the black and white print volume variable, the color print volume variable, the black and white cost variable and the color cost variable, determining, based on the empirical relationship, whether the print device has a poor fit to the standard relationship; wherein a poor fit is a deviation of the empirical relationship from the standard relationship that exceeds a threshold value; and in response to the print device having a poor fit to the standard relationship, determining which of the variables influenced the poor fit.