P-Value Calculator
About P-Value Calculator
Enter a z or t statistic, choose left-tailed, right-tailed, or two-tailed, and use degrees of freedom when you select the t distribution.
How to Use
Enter a z or t statistic, choose left-tailed, right-tailed, or two-tailed, and use degrees of freedom when you select the t distribution. Enter the Test statistic, Distribution, Tail, and Degrees of freedom values and review the P-value outputs after you calculate.
- Open the calculator : Use P-Value Calculator from the Math category.
- Check the inputs : Review the required values and any optional settings.
- Read the formula : Use the formula and notes below to understand how the result is produced.
Common Questions
What formula does the P-Value Calculator use?
P-value = tail area from the chosen distribution beyond the test statistic.
Inputs
- Test statistic
- Distribution
- Tail
- Degrees of freedom
Outputs
- P-value
Formula
P-value = tail area from the chosen distribution beyond the test statistic.