Plot Diagnostics for Fitted Models—Wolfram Language Documentation Diagnostics are an important part of analyzing models of data. Plots of residuals and leverage or influence measures provide valuable insight into whether assumptions of the model are reasonable and whether there are data points that exert too much influence on the fitting. You can create these types of graphics in the Wolfram Language by using results from functions such as LinearModelFit together with built-in plotting functions. with algebracomputerdiagnosticsmatematickýpoítaesoftwaresymbolickévýpoty