P-Value Calculator
Calculate p-values from test statistics for hypothesis testing
Results:
P-Value: 0.045500
Test Statistic: 2.0000
Test Type: Z-Test
Tail Type: Two-Tailed
Significant at α = 0.05? Yes
Significant at α = 0.01? No
About P-Value
The p-value is the probability of obtaining test results at least as extreme as the observed results, assuming the null hypothesis is true.
Interpretation:
- p < 0.01: Very strong evidence against null hypothesis
- p < 0.05: Strong evidence against null hypothesis
- p < 0.10: Weak evidence against null hypothesis
- p ≥ 0.10: Little or no evidence against null hypothesis