In Excel, there are two ways of calculating the weighted average with percentages: using the SUM function and using the SUMPRODUCT function. Let us have a look at these 2 methods in detail.

One of the many features of Excel is being nosy. That's right, you can quickly calculate a persons age as long as you have their birth date.

To calculate a price-weighted average, or any arithmetic average for that matter, add the numbers (stock prices) together and divide by the number of stocks in the average.