Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

This post explains how to calculate Weighted Average in Excel with percentages. In a standard arithmetic average where the sum of values is divided by the number of values, each data value is treated ...

The SUBTOTAL function in Excel is a powerful alternative to SUM, AVERAGE, and MIN, particularly when working with filtered data or hidden rows. Unlike SUM, SUBTOTAL adjusts dynamically to display only ...