Video: Tus nqi me me txhais li cas?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
A txi p - tus nqi (feem ntau ≦ 0.05) qhia cov pov thawj muaj zog tiv thaiv qhov kev xav tsis zoo, yog li koj tsis lees paub qhov kev xav tsis zoo. Ib tug loj p - tus nqi (> 0.05) qhia cov pov thawj tsis muaj zog tiv thaiv qhov kev xav tsis zoo, yog li koj tsis lees paub qhov kev xav tsis zoo.
Tsis tas li ntawd, tus nqi P txhais li cas?
Hauv kev txheeb cais, cov p - tus nqi yog Qhov tshwm sim ntawm qhov tau txais cov txiaj ntsig zoo heev raws li cov txiaj ntsig tau pom los ntawm kev ntsuas kev ntsuas ntsuas, piv txwv tias qhov kev xav tsis zoo yog yog lawm. Ib qho me me p - tus nqi txhais tau tias tias muaj yog cov pov thawj muaj zog hauv kev pom zoo ntawm lwm txoj kev xav.
Ib tug kuj yuav nug, P tus nqi ntawm 0.05 Qhov tseem ceeb? A p - tus nqi tsawg dua 0.05 (feem ntau yog ≦ 0.05 ) yog txheeb cais tseem ceeb . Nws qhia cov pov thawj muaj zog tiv thaiv qhov kev xav tsis zoo, vim tias muaj tsawg dua li 5% qhov tshwm sim qhov tsis muaj tseeb (thiab cov txiaj ntsig yog random). Yog li ntawd, peb tsis lees txais qhov kev xav tsis tseeb, thiab lees txais lwm qhov kev xav.
Ntxiv mus, tus nqi P puas tuaj yeem siab dua 1?
Piav: A p - tus nqi qhia koj qhov tshwm sim ntawm qhov tshwm sim uas sib npaug los yog loj dua qhov tshwm sim koj ua tiav raws li koj qhov kev xav tshwj xeeb. A p - tus nqi siab dua dua ib yuav txhais tau tias yuav muaj loj dua 100% thiab qhov no tau tsis tshwm sim.
P tus nqi xam li cas?
Muaj ob qhov xwm txheej: Yog tias koj qhov kev ntsuas ntsuas tsis zoo, thawj zaug pom qhov tshwm sim uas Z tsawg dua koj qhov kev xeem (saib koj cov ntaub ntawv xeem ntawm Z-table thiab nrhiav nws qhov muaj feem cuam tshuam). Tom qab ntawd muab ob npaug rau qhov tshwm sim kom tau txais p - tus nqi . Tom qab ntawd muab ob npaug rau qhov tshwm sim kom tau txais p - tus nqi.
Pom zoo:
Tus nqi chav dej 12x12 tus nqi ntau npaum li cas?
Feem ntau cov chav ntxiv rau hnub ci raug nqi ntawm $ 8,000 txog $ 80,000. Qhov nruab nrab tsuas yog siab dua $ 30,000. Ib square taw, cia siab tias yuav tau them ntawm $ 120 txog $ 300. Cov khoom siv ua ntej ua tiav yog nruab nrab ntawm $ 5,000 thiab $ 30,000. Loj. Nqe 10x10 $5,000 - $8,000 12x10 $10,000 12x20 $20,000
Tus nqi roj hloov pauv tus nqi ntau npaum li cas?
Lub twj tso kua roj tshiab yuav raug nqi koj nyob txhua qhov chaw ntawm $ 100 txog $ 300, nyob ntawm qhov tsim thiab qauv ntawm koj lub tsheb. Raws li tus nqi zog, feem ntau nws yuav ua haujlwm ib ncig $ 200 lossis $ 300, vim nws siv sijhawm li ob peb teev rau cov kws kho tshuab kom ua tiav hom haujlwm no
Thaum tus nqi marginal siab tshaj qhov nruab nrab tus nqi nruab nrab tag nrho cov nqi yuav tsum poob?
Thaum tus nqi marginal qis dua tus nqi nruab nrab tag nrho, tus nqi nruab nrab tag nrho yuav poob, thiab thaum tus nqi marginal siab dua tus nqi nruab nrab, tus nqi nruab nrab yuav nce ntxiv. Lub tuam txhab ua haujlwm tau zoo tshaj plaws ntawm tus nqi nruab nrab qis tshaj, uas tseem yog qhov nruab nrab tag nrho tus nqi (ATC) = tus nqi qis (MC)
Tus Nqi Them Nqi Them Nqi Them Nqi Li Cas yog dab tsi?
Pib txij Lub Xya Hli 1, 2018, qhov pib nyob rau hauv Txoj Cai Tus Nqi Tseeb lossis Tus Nqi Them Nqi (tseem feem ntau xa mus los ntawm nws lub npe qub, Txoj Cai Qhov Tseeb hauv Kev Sib Tham (lossis TINA)) rau cov neeg cog lus xa mus rau tsoomfwv tau lees paub "tus nqi lossis cov ntaub ntawv nqi" nce ntau ntawm $ 750,000 mus rau $ 2 lab
Dab tsi yog txhais los ntawm kev hloov tus nqi sib tham txog ntau txoj hauv kev hloov tus nqi?
Txoj kev hloov tus nqi yog txoj hauv kev tsim tsa caj npab tus nqi ntev lossis cov txiaj ntsig los ntawm kev lag luam ntawm cov tuam txhab cuam tshuam. Kev sib pauv ntawm cov tuam txhab muaj feem cuam tshuam rau qhov uas tus nqi caj npab ntev yuav raug tsim yog hu ua "kev tswj hwm kev lag luam"