In an increasingly data-driven world, it is more important than ever for students as well as professionals to better understand basic statistical concepts. 100 Questions (and Answers) About Statistics addresses the essential questions that students ask about statistics in a concise and accessible way. It is perfect for instructors, students, and practitioners as a supplement to more comprehensive materials, or as a desk reference with quick answers to the most frequently asked questions.

# What Is an Excel Function, and How Can I Use It to Perform Tests of Inference?

### What Is an Excel Function, and How Can I Use It to Perform Tests of Inference?

An Excel function is a prewritten formula that performs a set of operations. For example, one of the most simple is the =AVERAGE function, where Excel returns the average or mean value for a range of cells. The following function would compute the average for the values in the cells A3, A4, and A5:

$=\text{AVERAGE}\left(\text{A}3:\text{A}5\right)$

Most of Excel’s statistical functions (there are many other categories) can be used in conjunction with Excel ToolPak tools or on their own. Each of these ways of calculating statistical values has its advantages, so it’s best you know about both.

To use an Excel function, follow these steps:

• Select the cell in which you want the ...
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