This means that very often bias is ([______]) introduced into the experiment, the experimental procedure or the interpretation of results.
동의어 · accidentally, inadvertently, unconsciously파생어 · unintentional(의도하지 않은)
★ 주제문 — S2·S4·S5이(가) 이 문장을 떠받칩니다 — S1을(를) 맥락(으)로 뒷받침