English to Spanish Science Mathematics & Statistics Test methods

Hi, any translation suggestions for the term "signed deviation" in the following context (test methods)?

"Participants plot their signed deviations from the consensus values (exchange averages) on control charts in the same fashion described below for check standards, to ascertain if their measurement processes are non-biased relative to industry average."

I found the following explanation, but I have no clue how to translate the term:

https://en.wikipedia.org/wiki/Mean_signed_deviation

Thanks!