What is a p-value?

This value does not mean the probability the null hypothesis is true.

The p-value is a misunderstood statistic. Sometimes, textbooks carry incorrect definitions — perpetuating misinterpretations.

For example, a Twitter user shared a 2003 biology textbook definition:

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This blog looks at the use of statistics in Britain and beyond. It is written by RSS Statistical Ambassador and Chartered Statistician @anthonybmasters.

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Anthony B. Masters

This blog looks at the use of statistics in Britain and beyond. It is written by RSS Statistical Ambassador and Chartered Statistician @anthonybmasters.