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Question by  ALR27 (36)

How do I calculate p value on statistics?

 
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Answer by  lwarlick (121)

p stands for the probability of getting a value more extreme than your result when all other things remain equal or the same. Usually the p value is <5% or. 05. To accurately compute this value you must know whether you are doing a one or two tailed test.

 
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Answer by  BrianSJ (524)

There are many possible statistical distributions for variables (normal, Gaussian, chi-squared, and so on). You will need to determine the value of the test statistics (z value for normal distribution, et cetera), and then either look up the p-value on a table or derive it mathematically from the statistical distribution.

 
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Answer by  UpwardBoundPrecalcTutor (128)

The p value of a statistic is the probability of obtaing that value given a true nullhypothesis. If nullhypothesis is parameter<=Givenvalue then the p-value = probability(stat>observedvalue|nullhypothesis is true)

 
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