when you open up your Window with detailed information and your attributes list (if i recall correctly "s" and "c") and then spend points in ferocity you will see wich stats increases.
(crit chance, crit damage, average damage will increase).

once you reset (2000 gold) numbers will turn red in the detailed information, this will show you how much you lack with your previous attributes build.

these are best info and translations i can give, feel free to ask more if i was helpfull.

I know that i can view the raw stats when i want, but what bothers me is that you dont work with the stats. you work with the scores, and the scores are then translated into stats, but you cant tell how much a single score point gives. you just know that "more is better" but its really hard to compare stats just based on looking at an item or a skill point. because you have to take that point or to equip that item to see how it affects your stats and it feels like a meaningless system to me.