Why the scale starts at 6
The 6–10 range is a specialty-grading convention:
anything below specialty grade simply isn't scored, so
6 is the floor of the scale, not "zero". Score in
quarter-point steps and leave an attribute unscored
(—) rather than guessing — an unscored attribute
contributes nothing, which is honest; a guessed 7.5
pollutes every comparison you make later. The tick
rows count cups, not quality: five clean cups out of
five is full marks even if the coffee is merely good.
Defects