I was wondering y the endurance potion and the other potions related to stats are giving out zero stat points it just seems like a big rip off.. it's kinda like going into a KFC and ordering a bucket of chicken and they give you a bucket with nothing in it.. it kinda make's you mad and wonder where is the chicken

I have just used about 11 or 12 of them and have gotten 0 at least 7 or 8 times so far

Yup. 0 to 3 stat points. TO me, the biggest problem wit these potions is that they don't average evenly. It would be expected that they would give a 1.5 average stat (25% 0, 25% 1, 25% 2, 25% 3) but from my own experience they average at about ~1.2 stat. It may not seem such a big deal but when you use 1000 potions it means minus 300 stat points than expected.

I think the bigger problem is that they cost way too much per stat point compared to tomes