P-Value Calculator

Determine statistical significance. Calculate the p-value from a Z-score test statistic and find out if you should reject the null hypothesis.

Hypothesis Test Data

two-tailed

Standard value is 0.05 (5%)

No data yet

Enter the Z-score and test type to calculate the P-value and test for statistical significance.

How to Use

  1. 1

    Enter Test Statistic

    Input your calculated Z-score.

  2. 2

    Choose Test Type

    Select whether your hypothesis test is left-tailed, right-tailed, or two-tailed.

  3. 3

    Set Significance Level

    Enter your alpha (α) value. The standard threshold is 0.05.

  4. 4

    Calculate

    Click calculate to view your p-value and the conclusion of your hypothesis test.

Frequently Asked Questions

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