LSL thiab USL yog cov kev txwv ntev uas yuav tsum tau ua los ntawm koj cov neeg siv khoom, lossis teeb tsa los ntawm koj qhov tshwj xeeb sab hauv.
Piv txwv li kev faib tawm ib txwm:
- z. rau LSL=
- z rau USL=
- Shaded area probability=pnorm(-1.5) + (1-pnorm(1.5))=13.4% ntawm kev tsim tawm yog tawm ntawm cov kev txwv tshwj xeeb.
Koj suav LSL thiab USL li cas hauv Six Sigma?
1 The Six Sigma Process: USL=Mean + 3, LSL=Mean -3
USL thiab LSL suav li cas rau Cpk?
Cov mis rau kev suav ntawm Cpk yog Cpk=min(USL - μ, μ - LSL) / (3σ) qhov USL thiab LSL yog cov txwv sab sauv thiab qis dua, raws. Cov txheej txheem nrog Cpk ntawm 2.0 yog suav tias yog zoo heev, thaum ib qho nrog Cpk ntawm 1.33 yog suav tias tsim nyog.
USL thiab LSL yog dab tsi?
LSL stands rau Lower Specification Limit thiab USL stands rau Upper Specification Limit. Feem ntau peb piav qhia txog Cpk raws li lub peev xwm ntawm cov txheej txheem ua tiav txawm tias qhov nruab nrab ntawm qhov kev txwv tshwj xeeb.
Koj suav LSL thiab USL hauv Minitab li cas?
Piv txwv ntawm cov kev txwv sab sauv thiab qis dua
- LSL=2.5 USL=2.687. Cov lus qhia qis dua yog 2.500 ntiv tes thiab qhov tshwj xeeb sab saud yog 2.687 ntiv tes. …
- LSL=80. Feem ntau, tsuas yog siv ib qho kev txwv tshwj xeeb xwb. …
- USL=30. Hloov pauv, xav txog lub chaw hu xov tooj uas hu yuav tsum tau teb tsis pub dhau 30 vib nas this.
