Friday, April 15, 2011

The p-value

A conversation between a clinical researcher and a statistician about the meaning of a p-value (this is loosley based on the beginning of an article, "What your statistician never told you about p-values", by Blume and Peipert).


Blume, J. and J. F. Peipert (2003). "What your statistician never told you about P-values."
J Am Assoc Gynecol Laparosc 10(4): 439-444.

Power of the test, p-values, publication bias and statistical evidence
A discussion of statistical evidence and why you might not get results significant enough to reject your null hypothesis even if your alternative hypothesis is correct.

This video is related to the article "Statistics notes: Absence of evidence is not evidence of absence" by Douglas G. Altman and J. Martin Bland. Video created by Matt Asher. For more statistical insights please visit

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