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 Are Relationships Tested for Significance Using the Correlation Coefficient, and What Is an Example of How the Correlation Coefficient Is Used?

### How Are Relationships Tested for Significance Using the Correlation Coefficient, and What Is an Example of How the Correlation Coefficient Is Used?

Relationships between variables are tested for significance using a t-test, and as with any test of the significance of a statistic, the obtained value is compared to the critical value to determine whether a statistically significant relationship is present. If you refer to Figure 45.3, you can see how you can examine whether a relationship exists between two variables.

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