Hauv kev lag luam hauv kev lag luam, ntawm qhov ntsuas qhov ntsuas ntawm qhov ntsuas tau ua tau zoo, ib qho chaw tseem ceeb yog koom nrog rau tus neeg siv khoom tus lej ntsuas. Nws tso cai rau koj los txheeb xyuas qhov muaj zog thiab rov suav cov cim tseem ceeb ntawm cov kab ke ntawm cov nyiaj hauv lub teb chaws: cov nyiaj tau los ntawm cov khoom lag luam, cov nyiaj tau los hauv tebchaws, thiab lwm yam
Cov Lus Qhia
Kauj ruam 1
Ua ntej yuav pib nrog kev suav ntawm tus nqi teev nqi, koj yuav tsum nkag siab lub ntsiab cai ntawm nws kev tsim kho. Yog tias koj xav paub tias tus nqi ntawm qee yam khoom lossis kev pabcuam tau hloov lossis tus nqi ntawm cov khoom lossis cov kev pabcuam no, koj yuav tsum nqa tus lej qee yam khoom ntawm tus nqi taw rau tus nqi tag nrho. Txhawm rau ua qhov no, koj yuav tsum ntsuas qhov hnyav ntawm txhua qhov khoom (nqe lossis ntau ntawm cov khoom muag). Yog tias koj xav tau xav txog kev hloov pauv ntawm cov nqi rau cov khoom thauj, tom qab ntawd koj yuav tsum coj cov khoom ntawm cov khoom hnyav raws li qhov hnyav. Yog tias nws yuav tsum pom qhov hloov pauv ntawm cov khoom ntawm cov khoom muag, ces tus nqi yuav ua raws li qhov hnyav. Nws tsuas yog tsim nyog los txiav txim siab nyob rau theem ntawm lub sijhawm twg (lub hauv paus lossis kev qhia) los kho lawv.
Kauj ruam 2
Txhawm rau kom paub cov ntawv ntsuas nqi, koj tuaj yeem siv tus qauv Laspeyres. Hauv nws, qhov ntau ntawm cov khoom q yog tsau rau theem ntawm theem pib:
Ip = ΣP1xQ0 / ΣP0xQ0, qhov twg 1P1xQ0 yog tus nqi ntawm cov khoom muag hauv lub sijhawm dhau los (puag) lub sijhawm ntawm cov nqi ntawm lub sijhawm hais qhia; ΣP0хQ0 yog tus nqi ntawm ntau lawm hauv lub sijhawm pib.
Qhov ntsuas no qhia cov kev hloov pauv ntawm cov nqi hauv lub sijhawm qhia piv nrog lub hauv paus rau cov khoom muag hauv lub sijhawm pib. Hauv lwm lo lus, Laspeyres nqe tus nqi qhia tau hais tias pes tsawg zaus ntawm tus nqi them khoom lag luam nyob rau hauv lub sijhawm siv tau nce lossis txo qis vim cov nqi pauv hauv lub sijhawm qhia.
Kauj ruam 3
Koj tseem tuaj yeem laij ntsuas tus nqi ntsuas raug siv cov qauv Paasche. Hauv nws, qhov ntim ntawm cov khoom muag tau teeb tsa nyob rau theem ntawm lub sijhawm qhia:
Ip = ΣP1xQ1 / ΣP0xQ1, qhov twg 1P1xQ1 yog tus nqi ntawm cov khoom hauv lub sijhawm qhia; ΣP0хQ1 - tus nqi ntawm cov khoom muag hauv lub sijhawm qhia ntawm cov nqi ntawm cov khoom dhau los.
Qhov ntsuas no ua rau muaj qhov hloov ntawm cov nqi ntawm lub sijhawm hais qhia hauv qhov sib piv nrog lub hauv paus rau cov khoom muag hauv lub sijhawm qhia. Hauv lwm lo lus, nws qhia ntau npaum li cas tus nqi ntawm cov khoom muag tau hloov pauv. Paasche tus nqi ntsuas tau raug siv nyob rau hauv cov txheeb cais hauv tebchaws ua ntej txoj kev hloov pauv ntawm lub tebchaws mus rau kev lag luam kev lag luam. Tom qab xyoo 1991, kev suav ntawm kev ntsuas tus nqi pib pib ua haujlwm siv cov qauv Laspeyres.
