T Test Table Degrees Of Freedom. The critical values of t distribution are calculated according to the probabilities of two alpha values and the degrees of freedom. It s generally represented by t e.
It was developed by english statistician william sealy gosset. A t table is a table showing probabilities areas under the probability density function of the t distribution for different degrees of freedom. The column header are the t distribution probabilities alpha.
It s generally represented by t e.
The table entries are the critical values percentiles for the distribution. It is an important idea that appears in many contexts throughout statistics including hypothesis tests probability distributions and regression analysis. In two tailed student s t test the calculated value of t or t statistic t 0 is compared with the table or critical value of t from table for the test of significance. The row names are the degrees of freedom df.
