When you only need two outcomes, the IF function is fine. But the moment you start stacking conditions (if this, then that, otherwise if this, then that), you’re building a house of cards. At first, ...

Microsoft Excel 2010 provides a formula for calculating the average value from multiple worksheets in a workbook. Before you apply this formula, check that each worksheet is formatted the same way.

When your spreadsheet has formulas piled on top of formulas, tracking and repairing errors would be agony if it weren’t for Excel’s Precedents and Dependents: cells that are referred to by a formula ...