Thaum twg koj yuav siv qhov zoo ntawm kev ntsuas haum?
Thaum twg koj yuav siv qhov zoo ntawm kev ntsuas haum?

Video: Thaum twg koj yuav siv qhov zoo ntawm kev ntsuas haum?

Video: Thaum twg koj yuav siv qhov zoo ntawm kev ntsuas haum?
Video: lam yuam kuv lub siab by tsom xyooj 2021 2024, Kaum ib hlis
Anonim

Chi-square xeem yog siv tshwj xeeb rau cov ntaub ntawv tso nyob rau hauv cov chav kawm (bins), thiab nws yuav tsum tau ib tug txaus qauv loj nyob rau hauv kev txiav txim rau ua kom raug. Kev xeem zoo-ntawm-haum yog feem ntau siv los kuaj rau normality ntawm residuals los yog rau txiav txim seb puas yog ob qho qauv yog sib sau los ntawm kev faib khoom zoo ib yam.

Tom qab ntawd, ib tug kuj yuav nug, cov kev ntsuam xyuas dab tsi txiav txim siab zoo ntawm kev haum?

Hauv Chi-Square qhov zoo ntawm kev xeem haum , lub sij hawm zoo ntawm haum yog siv los sib piv qhov pom kev faib tawm nrog qhov kev cia siab yuav tshwm sim. Chi-Square qhov zoo ntawm kev xeem haum txiav txim siab npaum li cas theoretical faib (xws li ib txwm, binomial, los yog Poisson) haum rau empirical tis.

Ib yam li ntawd, qhov txawv ntawm qhov zoo ntawm kev haum thiab kev sim ntawm kev ywj pheej yog dab tsi? Cov txawv yog ib qho teeb meem ntawm kev tsim. Hauv kev sim ntawm kev ywj pheej , cov chav soj ntsuam tau sau los ntawm cov pej xeem thiab ob qhov kev hloov pauv tau raug soj ntsuam rau txhua chav. Nyob rau hauv qhov kev xeem zoo-ntawm- haum tsuas muaj ib qho kev pom txawv txawv.

koj txhais li cas los ntawm lub sij hawm zoo kom haum rau qhov kev xeem hais tias yuav tsum tau ua dab tsi?

Qhov zoo-ntawm-fit xeem yog hais txog kev ntsuas seb cov ntaub ntawv soj ntsuam zoo npaum li cas raws li qhov xav tau lossis tus qauv haum. Step-by-step piav qhia: Qhov zoo-ntawm- haum xeem yog siv nyob rau hauv kev txheeb cais los ntsuas qhov txawv ntawm qhov sib txawv los yog qhov ze ntawm tus qauv muab rau qhov tseeb pom qhov tseem ceeb.

Dab tsi yog qhov zoo ntawm kev haum hauv econometrics?

Cov zoo ntawm haum ntawm ib qho kev txheeb cais qauv piav qhia txog nws zoo npaum li cas rau ib pawg ntawm kev soj ntsuam. Kev ntsuas ntawm zoo ntawm haum feem ntau summarize qhov tsis sib xws ntawm kev soj ntsuam qhov tseem ceeb thiab qhov tseem ceeb xav tau nyob rau hauv qauv hauv nqe lus nug.

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