Statistics & Probability
P-Value Calculator
Lets users solve and check p-value instantly with formula, steps and examples — no manual math.
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p-value
0.05
two-tailed p-value ≈ 0.05 — significant at α = 0.05.
Significance
Significant at α = 0.05
About this calculator
Converts a z test statistic to a p-value (the probability of a result at least this extreme under the null hypothesis) using the standard normal CDF. p < 0.05 conventionally indicates statistical significance.
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