The formula of Mean: In statistics, "mean" is a measure of central tendency, calculated by summing up all the values in a dataset and dividing by the number of data points. The single numerical value ...

A trimmed mean is much like a standard mean, which you can derive in Excel using the AVERAGE function. However, instead of using all of the data points to create the mean, a trimmed mean will leave ...

Katharine Beer is a writer, editor, and archivist based in New York. She has a broad range of experience in research and writing, having covered subjects as diverse as the history of New York City's ...

There are many situations in investing in which it makes sense to look at how two different numbers related to each other over time. Whether you're talking about two stocks in the same industry, the ...

Weighted average is a powerful tool for an investor. It can be used to evaluate the performance of a portfolio. It can help us better understand how the broader market moves. Even more important, it ...

Calculate average percentage difference by subtracting, then dividing price differences. Average percentage difference helps foresee market trends and irrational periods. Understanding this metric can ...