What is a T Distribution?

What is the T Distribution Table?

The t distribution table values are critical values of the t distribution. The column header are the t distribution probabilities (alpha). The row names are the degrees of freedom (df). Student t table gives the probability that the absolute t value with a given degrees of freedom lies above the tabulated value.

http://www.sthda.com/english/wiki/t-distribution-table

When Would You Use a T Distribution or a T Distribution Table?

T-distributions are most likely used to compare two process means. It is a hypothesis test of means.

You would use these in the following specific hypothesis tests:

• One Sample T Test
• Two Sample T Test
• Paired T Test
• Student’s T Test