# Powerful Stats

No, I’m not talking about a 400 lb bench press. I’m talking about *statistical power*. Statistical power is a greatly important concept for anyone who wants to interpret scientific research, because statistical tests form the basis of all scientific results. If you have no knowledge of statistics, you can’t properly interpret research. According to many great scientists, statistical illiteracy is the 21^{st} century’s equivalent of the inability to read and write.

Before I continue, here’s a little test for you: *Suppose* a* brand new study was just published in *The Journal of Strength and Conditioning Research*. The researchers compared two resistance training groups that were identical with the exception that one used dumbbells and the other used kettlebells. Unfortunately, the researchers had little funding, so each group had only 5 people in it. At the end of the study, the kettlebell training group had gained significantly more muscle mass than the dumbbell group. Does this support that kettlebells are more effective than dumbbells for bodybuilding purposes? *I’ll give you the answer after explaining what statistical power is.

## Read the full article here.

## 7 Comments

Fabulous! Makes me miss my Advanced Stats courses for my PhD!! Thank you for taking the time to write this!

Many thanks for the Statistics Lesson. :)

Ha, that’s nice to hear. Statistical power is the probability of detecting an effect if there is one, i.e. your sensitivity to find what you’re looking for in a study.

Cool, so it sounds like my thinking was correct; or at least on the right track. :)

Full article was deleted or not found on reffered page

Fixed. Bret changed the link. Thanks for letting me know.