P kaus mom yog dab tsi hauv kev txheeb cais?
P kaus mom yog dab tsi hauv kev txheeb cais?

Video: P kaus mom yog dab tsi hauv kev txheeb cais?

Video: P kaus mom yog dab tsi hauv kev txheeb cais?
Video: 1 tsug 13 hnub _part#2_phees lauj fullmusic MV 2022-2023 2024, Kaum ib hlis
Anonim

Txheeb cais : Ib tug yam ntxwv ntawm tus qauv. (% ntawm cov neeg tshawb fawb uas nyiam Trump). Hauv txheeb cais peb nyiam siv lub ' kaus mom ' notation to imply a txheeb cais . Peb xaiv P los sawv cev rau qhov kev faib ua feem ntawm cov pejxeem. Vim P tsis paub thiab tsis paub peb siv Phat txhawm rau txheeb xyuas qhov kev faib ua feem hauv qhov qauv.

Piv txwv li, lub ntsiab lus ntawm p lub kaus mom yog dab tsi?

Yog hais tias rov random piv txwv ntawm ib tug muab qhov luaj li cas n raug coj los ntawm cov pej xeem ntawm qhov tseem ceeb rau ib tug categorical variable, qhov kev faib ua feem nyob rau hauv qeb ntawm kev txaus siab yog. p , tiam txhais tau tias ntawm tag nrho cov piv txwv proportions ( p - kaus mom ) yog cov pejxeem proportions ( p ).

Ib tug kuj yuav nug, P lub kaus mom thiab Q lub kaus mom yog dab tsi hauv kev txheeb cais? P . qhov tshwm sim ntawm cov ntaub ntawv (lossis cov ntaub ntawv hnyav dua) tshwm sim los ntawm lub sijhawm, saib P tus nqi. p . proportions ntawm tus qauv nrog ib tug muab tus yam ntxwv. q kaus , cov kaus mom cim saum lub q txhais tau tias "kev kwv yees ntawm"

Ib sab ntawm no, koj pom P lub kaus mom hauv kev txheeb cais li cas?

Txhawm rau ua nws, koj xav tau ob tus lej. Ib qho yog tus qauv loj (n) thiab lwm qhov yog tus naj npawb ntawm qhov tshwm sim ntawm qhov xwm txheej lossis qhov ntsuas hauv nqe lus nug (X). Qhov sib npaug rau p - kaus mom yog p - kaus mom = X/n. Hauv cov lus: Koj nrhiav p - kaus mom los ntawm kev faib cov naj npawb ntawm qhov tshwm sim ntawm qhov kev tshwm sim xav tau los ntawm tus qauv loj.

P bar sawv rau dab tsi hauv kev txheeb cais?

nruab nrab feem

Pom zoo: