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Interview Question

Consultant Interview(Student Candidate)

What is a p-value?

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Interview Answer

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In statistical significance testing the p-value is the probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true. A researcher will often "reject the null hypothesis" when the p-value turns out to be less than a certain significance level, often 0.05 or 0.01.

Mitch on Sep 27, 2013

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