tcdf | TI-Tips

In this video, I show how to use the tcdf function on the TI-84 calculator to find the area under a curve of a t-distribution. When using the function, you entry into the calculator will look as follows tcdf(lower, upper, degrees of freedom). If you want area going towards infinity or negative infinity, just substitute a very large number like 100000 or -100000 in for your upper and lower bound.