Probability Value (p Value)

Probability Value (p Value)

Subject: General Sociology

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• The probability of the observed value of a sample statistic, or a more extreme value, if the null hypothesis were true. It is a conditional probability because it tells the researcher the probability of the observed result if the null hypothesis were true. The probability value does not tell the researcher the probability that the null hypothesis is true; it does not tell the researcher the probability that the alternative hypothesis is true; and it does not tell the researcher the probability that the null hypothesis is false. When the probability value is small, the researcher rejects the null hypothesis and tentatively accepts the alternative hypothesis.

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