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.

# How Can I Use Excel to Calculate Simple Analysis of Variance?

### How Can I Use Excel to Calculate Simple Analysis of Variance?

Analysis of variance produces a robust test for the difference between means of two or more groups.

We are using the following data to test the differences among the means of three independent groups of police officers undergoing training on firearm accuracy. Group 1 was given no extra training; Group 2, 10 hours extra training per session; and group 3, 20 hours extra training per session. The dependent or outcome variable is accuracy, with a perfect score being 100. The hypothesis is that there is a significant difference among all three groups. Since ANOVAs or F-tests are robust and do not look at differences between pairs of means, this is not an analysis for ...