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Student T Distribution Calculator - CDF

Calculates the Student T distribution cumulative distribution function for 1 tail.



Formula: 1-tdist(fcx,fcdf,1)

See the Statistical Distributions Overview page for more statistical distribution calculators.

Example 1

What is the 1 tail probability associated with a Student’s T distribution with 8 degrees of freedom with a t-value of 1.86?

Value Keystrokes Display Description
8 df 8.00 Stores the df value.
1.86 x 1.86 Stores the x value.
  tdist 0.95 Calculates the T distribution.

Example 2, Inverse

A hypothesis test requires a critical t-value from the Student's T-Distribution with 25 degrees of freedom. Find the t-value for a 1 tail probability of 0.90

Value Keystrokes Display Description
25 df 25.00 Stores the df value.
.90 tdist 0.90 Stores the tdist.
  x 1.316 Calculates the x value.


Student's t-distribution - Wikipedia