Qhov sib txawv tseem ceeb ntawm lub sijhawm series thiab cov ntaub ntawv vaj huam sib luag yog lub sijhawm series tsom rau ib tus tib neeg ntawm ntau lub sijhawm thaum cov ntaub ntawv vaj huam sib luag (lossis cov ntaub ntawv ntev) tsom rau ntau tus neeg ntawm ntau lub sijhawm. Xav txog ob qho piv txwv hauv qab no kom nkag siab qhov sib txawv ntawm lub sij hawm series thiab cov ntaub ntawv vaj huam sib luag kom meej: cov txiaj ntsig ntawm ib tus neeg dhau ib lub sij hawm kaum xyoo yog ib qho piv txwv ntawm cov ntaub ntawv lub sij hawm thaum cov nyiaj tau los ntawm cov tib neeg nyob rau lub sij hawm ntawm kaum xyoo yog ib qho piv txwv rau vaj huam sib luag data.
Teb xws li Econometrics thiab kev txheeb cais tso siab rau cov ntaub ntawv. Tsis tas li ntawd, nws yog ib qho tseem ceeb ntawm kev tshawb fawb thiab kev tsom xam. Feem ntau, muaj ntau txoj hauv kev kom tau txais cov ntaub ntawv. Tsoom fwv thiab cov koom haum ntiag tug, internet, thiab cov koom haum thoob ntiaj teb xws li IMF thiab World Bank siv ntau txoj hauv kev los sau cov ntaub ntawv. Ntxiv mus, muaj ntau hom ntaub ntawv. Kab lus no tham txog ob ntawm lawv uas yog lub sijhawm thiab cov ntaub ntawv vaj huam sib luag.
Lub Sijhawm Series yog dab tsi?
Lub Sijhawm series cov ntaub ntawv tsom mus rau kev soj ntsuam ntawm ib tus neeg ntawm lub sijhawm sib txawv feem ntau ntawm cov sijhawm sib xws. Ib qho piv txwv yog cov nyiaj tau los ntawm ib lub koom haum suav thaum kawg ntawm txhua xyoo rau lub sijhawm 5 xyoos.
Lub sijhawm series cov ntaub ntawv muaj daim ntawv ntawm Xt. Lub t subscript qhia lub sijhawm. Cov nqi Tshuag, Cov Khoom Muag Hauv Tebchaws thiab cov ntaub ntawv muag tsheb tuaj yeem siv sij hawm daim ntawv.
Cov ntaub ntawv vaj huam sib luag yog dab tsi?
vaj huam sib luag cov ntaub ntawv tseem hu ua longitudinal data. Hom ntaub ntawv no tsom rau ntau tus neeg ntawm ntau lub sijhawm. Cov ntaub ntawv vaj huam sib luag muaj daim ntawv ntawm Xit. Qhov kuv qhia tus neeg thaum t qhia txog lub sijhawm. Ib qho piv txwv yog Gross Domestic Product (GDP) ntawm tsib lub tebchaws nyob rau lub sijhawm kaum xyoo xws li 2001 txog 2010. Hauv qhov xwm txheej no, muaj tag nrho ntawm 50 qhov kev soj ntsuam.
Daim duab 01: Econometrics
Lwm qhov piv txwv yog cov nyiaj tau los ntawm ib pawg neeg raws li hauv qab no.
Qhov txawv ntawm Lub Sijhawm Series thiab Vaj Huam Sib Luag Cov Ntaub Ntawv yog dab tsi?
Lub Sijhawm series cov ntaub ntawv yog cov ntaub ntawv muaj xws li kev soj ntsuam ntawm ib tus neeg ntawm ntau lub sijhawm. Cov ntaub ntawv vaj huam sib luag yog cov ntaub ntawv muaj xws li kev soj ntsuam ntawm ntau tus neeg tau txais ntawm ntau lub sijhawm. Lub sij hawm series cov ntaub ntawv tsom rau ib tus neeg thaum cov ntaub ntawv vaj huam sib luag tsom rau ntau tus neeg. Saib ntawm daim ntawv thov ntawm ob hom ntaub ntawv, cov nyiaj tau los ntawm ib tug neeg nyob rau ib lub sij hawm ntawm kaum xyoo yog ib qho piv txwv ntawm lub sij hawm series cov ntaub ntawv thaum cov nyiaj tau los ntawm cov txheej txheem ntawm cov tib neeg nyob rau lub sij hawm ntawm kaum xyoo yog ib qho piv txwv rau cov ntaub ntawv vaj huam sib luag.
Summary – Sijhawm Series vs Vaj Huam Sib Luag Cov Ntaub Ntawv
Qhov txawv ntawm lub sijhawm series thiab cov ntaub ntawv vaj huam sib luag yog lub sijhawm series tsom rau ib tus tib neeg ntawm ntau lub sijhawm thaum cov ntaub ntawv vaj huam sib luag tsom rau ntau tus neeg ntawm ntau lub sijhawm.
