Txhua qhov yuam kev raug suav ncaj qha los ntawm cov khoom siv siv los ntawm QALS cov tswv cuab siv qhov sib npaug 2CV + kev tsis ncaj ncees%=TEa% kom ntseeg tau tias TEa tau ua tau.
Qhov yuam kev tso cai yog dab tsi?
Tso cai analytical yuam kev Statistics A systemic yuam kev uas yog 'tau txais', ob qho tib si statistically thiab analytically – piv txwv li, 95% txwv ntawm qhov yuam kev. Saib Standard deviation.
Qhov yuam kev siab tshaj plaws yog dab tsi?
Ntau tshaj qhov tso cai yuam kev txwv qhov yuam kev: tus nqi ntsuas qhov yuam kev, hais txog tus nqi siv tus nqi paub, tso cai los ntawm cov lus qhia lossis cov cai rau kev ntsuas, ntsuas ntsuas, los yog ntsuas qhov system.
Koj ua li cas suav tag nrho qhov kev ntsuas yuam kev?
Rov qab: Tag nrho cov kev txheeb xyuas yuam kev tau yog ib qho kev ntsuas muaj txiaj ntsig zoo rau kev soj ntsuam kev soj ntsuam zoo thiab teeb tsa lub hom phiaj. Nws feem ntau kwv yees los ntawm kev sib koom ua ke ntawm kev tsis sib xws (SD) thiab qhov nruab nrab qhov tsis ncaj ncees hauv kab zauv : tag nrho analytical yuam kev=kev tsis ncaj ncees + 1.65 x imprecision.
Puas yog CV lossis yuam kev?
Systematic yuam kev raug soj ntsuam los ntawm kev tsis ncaj ncees, thaum random yuam kev los ntawm imprecision ntsuas los ntawm coefficient ntawm variation (CV). … Tsis paub meej ntawm kev ntsuas muab qhov kwv yees ntau ntawm qhov zoo ntawm qhov kev xeem.
