For each dataset, enter your data into the given box separating each datum from its neighbor with tabs, commas, or spaces. Very commonly you will already have the data in your computer in some format. You should be able to just copy and paste that data into the appropriate area. This form is designed to handle datasets with between 3 and 1024 items in each dataset. After the t-test you will be given the option of displaying the data as a boxplot.
Click on the Calculate Now button when you have entered your data. Empty boxes will be ignored.