Can chi square ua ob lub tailed?

Cov txheej txheem:

Can chi square ua ob lub tailed?
Can chi square ua ob lub tailed?

Video: Can chi square ua ob lub tailed?

Video: Can chi square ua ob lub tailed?
Video: Chi-squared test and interpretation using SPSS (assumptions violated) 2024, Hlis ntuj nqeg
Anonim

Txawm tias nws ntsuas thaj tsam sab sauv, qhov ntsuas chi-square suav tias yog ib ob-tailed test (tsis yog kev taw qhia), vim nws tsuas yog nug yog tias cov frequencies txawv.

Puas yog chi-square txoj cai tailed?

Chi-square tests yog ib txwm txoj cai-tailed xeem.

Kev xeem chi-square puas tuaj yeem sab laug?

Rau qhov xeem tus Tsov tus tw, nws yog tus nqi ntxiv mus rau sab laug (me dua) Rau qhov kev xeem ob-tus Tsov tus tw, nws yog tus nqi ntxiv rau sab laug thiab tus nqi ntxiv mus rau sab xis. Nco ntsoov, nws tsis yog kem nrog cov qib ntawm kev ywj pheej ntxiv mus rau sab xis, nws yog tus nqi tseem ceeb uas ntxiv mus rau sab xis.

Vim li cas chi-square xeem ib txwm ib tus tailed?

Kev xeem χ2 thiab F yog ib qho kev xeem ib leeg vim peb yeej tsis muaj qhov tsis zoo ntawm χ2 thiab FRau χ2, qhov sib txawv ntawm qhov sib txawv ntawm kev soj ntsuam thiab xav tau squared muab faib los ntawm xav tau (ib feem), yog li chi-square ib txwm yog tus lej zoo lossis nws yuav nyob ze rau xoom ntawm sab xis thaum tsis muaj qhov sib txawv.

Yuav ua li cas koj thiaj paub tias nws yog ob-tailed los yog ib tug tailed?

Ib qho kev xeem ib leeg muaj tag nrho 5% ntawm qib alpha hauv ib tus Tsov tus tw (hauv sab laug, lossis sab xis). Ib ob - tailed xeem faib koj qib alpha hauv ib nrab (raws li hauv daim duab rau sab laug).

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