Product IDs, serial numbers and other reference numbers require a unique identifier to avoid confusion when referencing a product or specific data point. Although you can manually enter unique numbers ...

Harness the power of Subtotal in Excel to count grouped items Your email has been sent Excel's Subtotal feature can render quick results when you need simple grouping calculations. Susan Harkins shows ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...