This article explains multiple ways to calculate AUC mathematically along with step by step implementation guide in Python, SAS and R.
GraphPad Prism 10 Statistics Guide - Area under the curve
An illustration of how area under the curve (AUC) was computed. AUC is
How to Interpret a ROC Curve (With Examples) - Statology
ROC curve: DataRobot docs
ROC curves and Area Under the Curve explained (video)
The Area Under an ROC Curve
ROC curves and Area Under the Curve explained (video)
Area Under the Curve (AUC): A Robust Performance Measure of Classification Models, by Orkun Orulluoğlu
Area under the curve (AUC) and two-graph ROC curve with the
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