I looked at the results of each roll and then entered it directly into a spreadsheet

The stat cards are generated straight from the data

Using some formulas in the spreadsheet I tell it to see which numbers come up in a range of cells, then count each instance of the numbers, then order the results in a table from most common to least common.

The averages are generated in a similar way. Basically I tell the spreadsheet to add the number of cells that have data in them in a specific range together, then have it divide by the number of faces on the die (the magic number here bugs me but I’ll let it slide for now), and then it puts the result into a cell.