偏 is built from the 亻 (person (left)) and 扁 (flat (in 編·偏)) components.
It belongs to a phonetic family with 編 and 遍 — they share the 扁 component and the reading ヘン.
A common word using 偏 is 偏見 (へんけん), meaning “prejudice, narrow view”.
Don't confuse it with 編 and 遍.