Video: Qhov kev thov kwv yees yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Kev kwv yees yog kev kwv yees tsom mus rau yav tom ntej tus neeg siv khoom tus cwj pwm. Nws kwv yees xav tau rau kev lag luam cov khoom lag luam lossis cov kev pabcuam los ntawm kev siv cov txheej txheem sib txawv uas qhia tau hais tias yuav ua li cas, piv txwv li, kev hloov pauv ntawm tus nqi, tus neeg sib tw tus nqi lub tswv yim lossis kev hloov pauv ntawm cov neeg siv nyiaj tau los yuav cuam tshuam rau cov khoom. xav tau.
Tom qab ntawd, ib tug kuj yuav nug, ua li cas koj xam qhov kev thov kwv yees?
Kwv yees neeg siv khoom xav tau raws li kev muag khoom. xam qhov nruab nrab qhov muag txhua hli ntawm txhua yam khoom lossis pab pawg ntawm cov khoom; qhov no yuav muab rau koj kwv yees ntawm xav tau . Piv txwv li, yog tias koj muaj kev muag khoom nruab nrab ntawm cov phau ntawv muaj nqis ntawm $ 3,000, ces koj tuaj yeem ua tau kwv yees lub khw xav tau rau phau ntawv yuav $3,000.
Dab tsi yog qhov kev thov kwv yees hauv kev tswj hwm kev lag luam? Demand kwv yees hauv kev tswj kev lag luam hais txog kev kwv yees seb cov neeg siv khoom yuav coj li cas nrog rau koj cov khoom thiab cov kev pabcuam yav tom ntej. Demand kwv yees hauv kev tswj kev lag luam yog ib txoj hauv kev tseem ceeb rau koj los txiav txim siab lub sijhawm luv thiab ntev ntawm koj txoj kev lag luam.
Piv txwv li, qhov kev thov kwv yees thiab kev kwv yees yog dab tsi?
Demand kwv yees thiab forecasting . Cov lus teb yog qhov ntawd kev kwv yees sim ntsuas qhov sib txuas ntawm qib ntawm xav tau thiab cov variables uas txiav txim siab nws. Kev kwv yees , ntawm qhov tod tes, sim twv seb tag nrho theem ntawm yav tom ntej xav tau es tsis saib cov kev sib txuas tshwj xeeb.
Cov txheej txheem ntawm kev kwv yees cov sijhawm xav tau yog dab tsi?
Plaub thawj txoj kev siv rau kwv yees cov parameter (coefficients) ntawm cov xav tau muaj nuj nqi yog: (1) kev soj ntsuam cov neeg siv khoom, (2) cov chaw kho mob neeg siv khoom, (3) kev sim ua lag luam, thiab (4) kev ntsuam xyuas rov qab. Regression tsom xam tej zaum yog cov cuab yeej tseem ceeb tshaj plaws ntawm xav tau tsom xam rau ob qho laj thawj.
Pom zoo:
Dab tsi yog qhov xav tau kwv yees kev tswj hwm kev ua haujlwm?
Thiab cov txheej txheem ntawm kwv yees kev xav tau yav tom ntej ntawm cov khoom raws li chav tsev lossis tus nqi txiaj ntsig raug xa mus rau qhov xav tau kwv yees. Lub hom phiaj ntawm kev kwv yees yog los pab lub koom haum tswj tam sim no raws li kev npaj rau yav tom ntej los ntawm kev tshuaj xyuas qhov kev xav tau yav tom ntej tshaj plaws
Dab tsi yog qhov kev kwv yees sib txawv hauv kev txheeb xyuas regression?
Hauv kev yooj yim linear regression, peb kwv yees cov qhab nia ntawm ib qho kev sib txawv ntawm cov qhab nia ntawm qhov sib txawv thib ob. Qhov sib txawv peb tau kwv yees yog hu ua qhov sib txawv ntawm qhov sib txawv thiab raug xa mus rau Y. Qhov sib txawv peb tab tom ua raws li peb qhov kev twv ua ntej yog hu ua tus kwv yees sib txawv thiab raug xa mus rau X
Vim li cas cov kev kwv yees kwv yees muaj tseeb dua?
Aggregate forecasts feem ntau yog qhov tseeb dua li qhov kev kwv yees tsis sib xws vim a. aggregate forecasts yuav muaj ib tug loj tus qauv sib txawv ntawm qhov yuam kev txheeb ze rau qhov txhais tau tias. b. aggregate forecasts yuav muaj ib tug me me tus qauv sib txawv ntawm qhov yuam kev txheeb ze rau qhov txhais tau tias
Dab tsi yog qhov kev thov kwv yees hauv kev lag luam?
Txhais: Demand Forecasting yog hais txog cov txheej txheem ntawm kev kwv yees qhov kev thov yav tom ntej rau lub tuam txhab cov khoom. Hauv lwm lo lus, kev thov kev kwv yees yog suav nrog ntau cov kauj ruam uas cuam tshuam nrog kev cia siab ntawm kev thov rau cov khoom lag luam yav tom ntej nyob rau hauv ob qho tib si tswj tau thiab tsis muaj kev tswj hwm
Yuav ua li cas economists kwv yees los ntawm kev tsim ib qho kev thov nkhaus thaum twg qhov kev thov nkhaus yuav pab tau?
Raws li tus nqi ntawm qhov zoo lossis kev pabcuam txo qis tib neeg feem ntau xav yuav ntau ntawm nws thiab rov ua dua. Vim li cas aneconomist tsim kev lag luam xav tau nkhaus? Ua piv txwv yuav ua li cas tib neeg yuav hloov lawv cov kev yuav khoom thaum tus nqi hloov. Daim ntawv cog lus ntawm tus nqi thiab cov khoom lag luam