Raw data should be kept separate from all other data.
It is recommended that you keep your cooked (adjusted, calculated, coded, cleaned, wranggled, etc.) data in a different sheet or file from your raw (starting) data. This is primarily done so that if something goes wrong you can restore your work back to its original state and/or perform error checking.
Data Services Librarian
ENT, EEOB, NREM, and Environment.
Science and Technology Librarian
ABE, CCEE, Math, and Stats