deviation

【原文】
Sucharita Mulpuru, a Forrester Research Inc. analyst who follows retail, said while CIOs can use Big Data to make predictions based on what has happened in the past, deviations from those patterns can render prognostications “completely useless.”

【単語の意味（英語）】
the act of moving away from what is normal or acceptable; a difference from what is expected or acceptable
the amount by which a single measurement is different from the average

【単語の意味（日本語）】
はずれること；［統計］偏差

【コメント】
［類語］
「逸脱」 departure, divergence
「偏差」 variation