The edit box in the form allows you to filter results for specific students and also allows you to correlate performance on this test against some other assessement. There are rules about the format of the text you enter;
The format is intended to make it easy to copy from a spreadsheet and paste into the form.
If you ask for custom correlation you will get an extra table correlating test performance to the figures you provide and the usual correlation tables for individual questions and items will correlate against the figures you provide instead of against the overall mark on the test.