James Chen, CMT is an expert trader, investment adviser, and global market strategist. Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a degree in accounting and ...

To understand how the weighted average can achieve all these things, let's start with the nuts and bolts of the calculation. If only a few of the largest companies in the index have a lousy day, while ...

Excel's AVERAGEIF and AVERAGEIF functions let you find the average of a set of data. However, where they differ from the more straightforward AVERAGE function is in their ability to include or ...