Fourth quartile: The set of data points between the upper quartile and the maximum value of the data set. Calculating Quartiles In a Spreadsheet .

Derive your third quartile based on whether your data set includes an even or odd set of values. With an odd number of values, multiply N by 3, add 1 and divide the result by 4.

Picture a conference room full of fund managers. From behind a podium, the speaker asks all the top-quartile performers to stand up—and every fund manager rises. After all, at some point in ...