# TDIST

TDIST(x, degrees_freedom, tails)

Returns the percentage points probability for the t distribution.

 x The number from the distribution. degrees_freedom The number of degrees of freedom. tails The number of distribution tails to return:1 = one tailed distribution2 = two tailed distribution

 REMARKS
 * T.DIST.RT was added in Excel 2010 to replace this function when "tails" = 1.* T.DIST.2T was added in Excel 2010 to replace this function when "tails" = 2.* The t distribution is a continuous distribution* If "x" is not numeric, then #VALUE! is returned.* If "degrees_freedom" is not an integer, it is truncated.* If "degrees_freedom" < 1, then #NUM! is returned.* If "degrees_freedom" is not numeric, then #VALUE! is returned.* If "tails" is not an integer, it is truncated.* If "tails" = 1, then the one-tailed distribution is used.* If "tails" = 2, then the two-tailed distribution is used.* If "tails" is any value other than 1 or 2, then #NUM! is returned.* If "tails" is not numeric, then #VALUE! is returned.* You can use the T.DIST function to* You can use the T.INV function to* You can use the T.INV.2T function to* You can use the T.TEST function to* For the Microsoft documentation refer to support.microsoft.com* For the Google documentation refer to support.google.com

 A 1 =TDIST(0.1, 1, 1) = 0.468 2 =TDIST(0.1, 1, 2) = 0.937 3 =2*TDIST(0.1, 1, 1) = 0.937 4 =TDIST(0.5, 1, 1) = 0.352 5 =TDIST(1, 1, 1) = 0.250 6 =TDIST(1, 1, 2) = 0.500 7 =TDIST(1.5, 1, 1) = 0.187 8 =TDIST(2, 1, 1) = 0.148 9 =TDIST(2.5, 1, 1) = 0.121 10 =TDIST(5, 1, 1) = 0.063

 1 - This is the probability of a value equal to or greater than 1.96 with 10 degrees of freedom.