Narayanan, V.G., and Joel L. Heilprin. "AT&T Versus Verizon: A Financial Comparison, Spreadsheet for Students (Brief Case)." Harvard Business School Spreadsheet Supplement 917-545, June 2017.

The ABS function is a simple yet powerful tool in Microsoft Excel for handling data analysis tasks where the direction of the values is irrelevant, and only the magnitude matters. Understand the ABS ...