Brightness of light would be an example of a qualitative characteristic. Quantitative is more used with numbers for example, numbers of things, how many of something, while as qualitative is used for characteristics, such as, color, brightness.
Helpful hint: remember QUANT = HOW MANY OF QUAL = QUALITY = LOOKS
Hope this helps! Let me know if you don't understand !
Brightness is Qualitative unless it is talking about wattage. because quantitative is numbers which is why 'quantit' is in the word because of the word quantity
