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T Test Critical Value Calculator

Calculate the critical values from the one and two tailed probabilities and the degrees of freedom using this t test critical value calculator.

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T Test Critical Value Calculation

Degrees of Freedom (df) =
Two tailed probability Value α =
One tailed probability Value α =

 

Two-tailed T Value
One-tailed T Value

 
   
  
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The critical value calculation is based on t table.