Qhov ntim ntau lawm txhais li cas?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Ntau lawm ntim ntsuas tag nrho koj lub tuam txhab ua tau tsim tawm lub sijhawm. Qhov KPI no taug qab tag nrho cov khoom lag luam tsim nyob rau lub sijhawm teem sijhawm (hnub, lis piam, hli, quarters, xyoo) thiab tsom mus rau tag nrho cov khoom tsim tawm.

Xav txog qhov no, koj ua li cas suav cov ntim ntau lawm?

Ntau lawm ntim sib txawv. Cov ntau lawm ntim variance ntsuas tus nqi ntawm cov nyiaj siv ua haujlwm siv rau cov naj npawb ntawm cov units ua . Nws yog qhov sib txawv ntawm tus naj npawb ntawm cov units ua nyob rau hauv ib lub sij hawm thiab cov nyiaj txiag cov naj npawb ntawm cov units uas yuav tsum tau muaj ua , multiplied by budgeted overhead rate.

Ib tug kuj yuav nug, dab tsi yog volume variance? A ntim variance yog qhov txawv ntawm qhov tseeb kom muaj nuj nqis muag los yog siv thiab cov nyiaj txiag xav tau yuav tsum tau muag los yog noj, muab faib los ntawm tus qauv nqi ib chav tsev. Qhov no sib txawv yog siv raws li kev ntsuas dav dav ntawm seb lub lag luam puas tsim cov nqi ntawm chav tsev ntim rau qhov nws tau npaj.

Tsis tas li ntawd, qhov ntim khoom txhua xyoo yog dab tsi?

Cov xyoo ntau lawm ntim (APV) qhia txog tus nqi ntawm cov khoom lag luam uas cov dataset muab rau lub khw rau cov khoom no. Piv txwv li, lub ntau lawm ntim "glycerine" nyob rau hauv daim ntawv ntawm glycerin ntau lawm , los ntawm epichlorohydrin / GLO" dataset yog 4.8E + 8 kg / xyoo.

Puas yog qhov sib txawv ntawm qhov ntim qhia cov ntaub ntawv tseem ceeb rau cov thawj coj?

Yog li, qhov tsis zoo ntim variance txhais tias qhov tseeb ntim yog tsawg tshaj li qhov xav tau ntim . Puas qhov ntim qhov sib txawv qhia cov ntaub ntawv tseem ceeb rau cov thawj coj ? Cov ntim variance taw qhia qhov tshwm sim no, thiab yog tias tus sib txawv yog loj, ces qhov poob los yog nce yog loj txij li thaum lub ntim variance understates cov nyhuv.