Does getting hit by a pitch or reaching on an error measured in with OBP?

Question

Does OBP include any possible way of getting on base?

Answer 1

OBP is calculated by adding hits, walks, and hit by pitch and dividing that figure by the sum of at bats, walks, hit by pitch, and sacrifice flies.  Reaching on an error is not part of the calculation.

Answer 2

Anytime that you reach base safely, it is included in your OBP, except on a fielder's choice.  Walks, HBP, Errors, and even strikeouts where you reach first will affect your OBP, but not your batting average.  

Answer 3

yes any way you can get on counts  

Answer 4

Geting hit does and so does an error.