Rarely. Most news isn't "breaking" on TV, even if they do they refer to the online story. So that's where stories are corrected, because that's the official record.
Do they actually refer people to the online story, or do you just mean they are using that story to regurgitate to the viewers? I highly doubt most of the viewers are recieving the corrections if they're only given online.
Yeah, when there is breaking news it seems there's a ton of speculation and bad information given.
I get that. But how do the TV news programs do it? I don't remember them starting with, or including at all, a corrections segment.