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KEY TAKEAWAYS
- A p-value is a statistical measurement used to validate a hypothesis against observed data.
- A p-value measures the probability of obtaining the observed results, assuming that the null hypothesis is true.
- The lower the p-value, the greater the statistical significance of the observed difference.
- A p-value of 0.05 or lower is generally considered statistically significant.1
- P-value can serve as an alternative to—or in addition to—preselected confidence levels for hypothesis testing.
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