P (disambiguation)

P may refer to:

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  P (letter)

  The 16th letter of the English alphabet, also written as uppercase “P” and lowercase “p”.

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  p value (statistics)

  A statistic in hypothesis testing representing the probability of observing results at least as extreme under the null hypothesis.

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  p (physics prefix for pico-)

  The SI prefix “pico-” (symbol p), meaning one-trillionth (10⁻¹²).

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  p (pressure symbol)

  A common symbol for pressure in physics and engineering equations.