What is a p‑value? An expert explains the most misunderstood number in science

Tue, 11 Aug 2026 12:39:41 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://theconversation.com/what-is-a-p-value-an-expert-explains-the-most-misunderstood-number-in-science-288491>

"If you’ve ever tried to read a scientific paper, you’ve almost certainly run
into a p-value. And if you found it confusing, you’re in good company: plenty
of working scientists misunderstand it too.

The p-value is a number measuring the “statistical significance” of an
experiment, and it’s often treated as the adjudicator of whether the experiment
really found something or not. It decides whether researchers get to say that a
drug did something, or that one group differed from another.

Careers, publications and our understanding of the world hinge on p-values. So
it’s worth understanding what these numbers actually mean, because it’s not
what most people think."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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