Bob always sets his oven ten degrees higher than what the recipe calls for because he knows that it's always off by ten degrees. bob is compensating for the oven's:

That would be bias.

Bob's oven is different than usual ovens in that that is 10 degrees off and is what you would call bias. Bias in regular use means some notion or idea that is preconceived and usually unseasoned but in science and engineering, "bias" means and denotes a systematic error.