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 Do I Know Which Statistical Test to Use?

### How Do I Know Which Statistical Test to Use?

There are more than 100 different statistical tests that you can learn about, each one capable of analyzing data that pertain to a specific question. For example, if you wanted to find out whether there was a difference between the average scores of two unrelated groups, you would use a t-test for independent means. Or, if you wanted to find out whether there was a significant relationship between two variables, you would use a similar type of t-test but one that would use the correlation coefficient between the two variables.

It’s impossible in a book like 100 Questions (and Answers) to go into detail about every one of such a wide variety of tests, but we ...

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