A.測定結(jié)果合格率越低; B.測定結(jié)果合格率越高; C.與合格率高低無關(guān)
A.測定結(jié)果合格率越高; B.測定結(jié)果合格率越低; C.與合格率高低無關(guān)
A.士3S; B.士2S; C.±1S(S為標(biāo)準(zhǔn)偏差)