If a batter reaches base on an error is it an official at bat?

Answer 1

Yes. The only time it is not an official "At Bat", is if a batter reaches base on a base on balls, hit by pitch or catcher interference. A batter is also not charged with an "At Bat" if he hits a sacrifice fly (a fly ball out that results in a runner tagging up and scoring), or a sacrifice bunt that advances a runner or runners. He is also not charged with an "At Bat" if the batter reaches base as a result of an error on a sacrifice fly or sacrifice bunt.