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 the Difference Between Statistical Significance and Meaningfulness?

What Is the Difference Between Statistical Significance and Meaningfulness?

In general, statistical significance is expressed as a degree of risk (such as p < .05 or “p is less than .05”), and it has been the holy grail of research endeavors. But, what tends to be missing from some discussions about statistical significance is the important consideration of the meaningfulness of the data.

For example, the correlation between two variables such as incidence of crime and consumption of ice cream tends to be positive. The more ice cream that is consumed, the higher the crime rate. Surely, however, one does not control the other. Rather, they share something in common—the time of the year. In the summer, when it is warmer, there is both more ...

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