Chapter 9. Math and Statistical Functions
Excel is packed with dozens of mathematical functions. Some of these functions are for specialist audiences, like engineers or statisticians, while others are so useful they can turn up in almost any civilianâs spreadsheet.
In this chapter, youâll take a tour of two of the largest categories in Excelâs function library, namely the Math & Trig and Statistical functions. Rather than slog through each function one by one, this chapter covers the most useful functions in each category. It starts by looking at a bunch of functions that help round, add, and count numbers. Then it explains how to find averages, medians, and percentiles, which are helpful when you want to compare groups of data. Toward the end of the chapter, youâll see some of the more specialized functions that showcase Excelâs skill with trigonometry and advanced statisticsâgreat for math lovers, accounting jockeys, or political-polling wonks interested in double-checking statistical significance claims.
Rounding Numbers
Most people donât devote enough thought to rounding, the process by which you adjust fractional numbers so theyâre less precise but more manageable. For example, rounding can transform the unwieldy number 1.984323125 to 2. Excel lets you round numbers two ways:
Modify the number format of the cell. With this method, Excel rounds the displayed value, but doesnât change the underlying value. The advantage to this approach is that you can use the ...
Get Excel 2013: The Missing Manual now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.