Muaj kev pheej hmoo vs kev kho mob tseem ceeb?

Cov txheej txheem:

Muaj kev pheej hmoo vs kev kho mob tseem ceeb?
Muaj kev pheej hmoo vs kev kho mob tseem ceeb?
Anonim

Feem ntau cov qhab nia ntawm 60-69 yog suav tias yog "tseem ceeb" thiab me ntsis atypical los ntawm tus qauv. Nws feem ntau txhais tau hais tias yuav tsum tau txais cov ntaub ntawv ntau ntxiv lossis saib xyuas tus cwj pwm. Cov qhab nia tseem ceeb hauv tsev kho mob yog feem ntau cov uas muaj 70 thiab siab dua. … Xav paub ntau ntxiv.

Qhov txawv ntawm qhov chaw kho mob tseem ceeb thiab kev txheeb xyuas qhov tseem ceeb yog dab tsi?

Raws li kev kho mob, qhov tseem ceeb hauv kev kho mob (tseem hu ua qhov tseem ceeb) raug muab rau qhov tshwm sim uas qhov kev kho mob tau muaj txiaj ntsig zoo thiab muaj txiaj ntsig. Kev hais lus dav dav, qhov tseem ceeb ntawm cov lej raug muab rau qhov tshwm sim thaum pom tias qhov xwm txheej tsis zoo li tshwm sim los ntawm lub sijhawm.

txhais li cas thaum ib yam dab tsi tsis tseem ceeb hauv chaw kho mob?

Ib yam li ntawd, cov txiaj ntsig tsis tseem ceeb tsis ua pov thawj tias null hypothesis yog qhov tseeb; lawv kuj tsis qhia qhov tseeb lossis qhov tseeb ntawm qhov kev xav uas tus kws tshawb fawb tau tsim.

Tus nqi kho mob tseem ceeb yog dab tsi?

Hauv kev tshawb fawb txog kev noj qab haus huv, feem ntau pom zoo tias peb xav kom tsuas muaj 5% lossis tsawg dua qhov tshwm sim uas qhov kev kho mob tshwm sim, qhov muaj feem cuam tshuam, lossis cov txiaj ntsig kev kuaj mob tuaj yeem yog vim muaj caij nyoog ib leeg. Thaum tus nqi p yog. 05 los yog tsawg dua, peb hais tias cov txiaj ntsig tseem ceeb.

Koj paub li cas yog ib yam dab tsi tseem ceeb hauv chaw kho mob?

Yog li, hauv cov ntsiab lus yooj yim, ifkev kho mob ua rau muaj kev txhim kho zoo thiab pom zoo rau tus neeg mob, peb tuaj yeem hu qhov no 'kho qhov tseem ceeb' (lossis tseem ceeb hauv chaw kho mob). Hauv qhov sib piv, qhov tseem ceeb ntawm kev txheeb cais yog txiav txim los ntawm p-tus nqi (thiab kev ntseeg siab ib ntus).

Pom zoo: