# Probability (P) Value T test Calculator

P values is a function of the observed sample results in T test. Calculate two tailed and one tailed p values with the given t test and degree of freedom using Probability (P) Value T test Calculator. If P-value is less than (or equal to) Î±, then null hypothesis is rejected and not rejected when greater than Î±. Enter the T value and degree of freedom in the T Distribution Calculator to find the Probability (P) Value of T test.

## T Distribution Calculator

P values is a function of the observed sample results in T test. Calculate two tailed and one tailed p values with the given t test and degree of freedom using Probability (P) Value T test Calculator. If P-value is less than (or equal to) Î±, then null hypothesis is rejected and not rejected when greater than Î±. Enter the T value and degree of freedom in the T Distribution Calculator to find the Probability (P) Value of T test.

Code to add this calci to your website

**Formula Used:**

P Value = [ 1/ ( (√df) B(1/2,df/2) ) ] lt->-t to t ∫ ( 1+ x^{2}/df)^{(-(v+1)/2)} .dx

**Where **
df = degrees of freedom
x = T-Value

Calculation of one tailed and two tailed probability values for T-test is made easy and simple here.