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April 30, 2012

"May I Show You My Collection of p-Values?"

Excellent. (Via Marginal Revolution.)

 Which of the following statements about p-values is correct?

1. p-value of 5% implies that the probability of the null hypothesis being true is (no more than) 5%.
2. p-value of 0.005 implies much more "statistically significant" results than does a p-value of 0.05.
3. The p-value is the likelihood that the findings are due to chance.
4. A p-value of 1% means that there is a 99% chance that the data were sampled from a population that's consistent with the null hypothesis.
5. None of the above.


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Terry Pratt

Alas, my year of undergraduate stat has apparently failed me.

I picked #2 which is incorrect. But who expected the blogger to change the null distribution between samples? Apples and oranges indeed.

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