When you roll a low stat, if possible, you dump it in a skill your character hardly ever uses and should those skill checks come up let more capable party members make those rolls. But, that’s you, the PLAYER, thinking that way. Is your character going to think the same way? That’s part of their life and character, not some STAT.
I’m talking about Role Play, of course, and how to make your character more fleshed out and memorable. Personally I’m rather perverse and have been known to lower stats because I had a strong character concept.
A ‘perfect’ character who is good at everything is actually quite boring. Characters are often more memorable for character flaws. Think about the tales you tell around the gaming table. It’s usually about the Epic Fails isn’t it? So the occasional klutz is no bad thing, and the game is balanced for it so it should never be necessary to power-game your way though.