17 or 18 in an atribute

If I have 1 or 2 items equiped with the mod +1 'any attribute name' (10-20% chance while using skills).' while having 16 points in that atribute point, will the skill be better?

Since I'm a Healing Monk with 16 Healing Prayers and the skill recharge/faster casting aren't much help in my build I'd like to have something else as a bonus, and I was thinking about this, but I'm not sure about this will help me at all.

Thanks for the help !

Yes, those +1 to attributes is the same as any head piece or rune, only it's a 20% chance at most. So that would mean it would make your skills better as you guessed.

I think the most you can get between an Elementalist and Necro(?) is 19. 12(stat) +1(Head) + 3(Rune) + 2(Skill) +1(Weapon)

if you could find a rod and a focus with +1 healing prayers (i think there are only focii though, so good luck) you would be able to heal for quite a bit more at a 40% chance...so i would say its worth it