To use this T critical value (t table) calculator, enter values in input box. The t table value calculator will instantly give you the t value for one tailed probability as well as two tailed probability.
This table contains critical values of the Student's t distribution computed using the cumulative distribution function . The t distribution is symmetric so that t1-α,ν = -tα,ν . The t table can be used for both one-sided (lower and upper) and two-sided tests using the appropriate value of α .
Find the t critical value if the size of the sample is 5 and the significance level is 0.05. Solution: Step 1: Subtract 1 from the sample size to get the degree of freedom. Degree of Freedom = N - 1 = 5 - 1 Degree of freedom = 4 α = 0.05. Step 2: Depending on the test, choose the one-tailed t distribution table or two-tailed t table below
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one tailed critical value table
