Floating Point Errors in Excel
Have you ever had Excel tell you two numbers are different when they look the same? This can be quite unsettling. You keep checking and re-checking numbers that look identical, and yet Excel insists they are different. Is Excel broken? Do you need glasses? Don't worry, it's not your fault. You may have run into a floating-point error. There are reasons why this can happen, and simple ways to fix the problem.