Yuav ua li cas hloov pauv?
Yuav ua li cas hloov pauv?

Video: Yuav ua li cas hloov pauv?

Video: Yuav ua li cas hloov pauv?
Video: yuav ua li cas lub neej thiaj hloov pauv kom zoo dua qub 2024, Kaum ib hlis
Anonim

Kev cia siab thiab Variance . Cov xav tau tus nqi (lossis txhais tau tias) ntawm X, qhov twg X yog qhov sib txawv ntawm qhov sib txawv, yog qhov hnyav nruab nrab ntawm qhov muaj peev xwm uas X tuaj yeem nqa tau, txhua tus nqi raug hnyav raws li qhov tshwm sim tshwm sim. Cov xav tau tus nqi ntawm X feem ntau yog sau ua E(X) lossis m. E(X) = S x P(X = x)

Cov lus nug tseem yog, koj piav qhia qhov txawv li cas?

Kev hloov pauv , hauv biology, txhua qhov sib txawv ntawm cov hlwb, cov kab mob ntawm tus kheej, lossis pab pawg ntawm cov kab mob ntawm ib hom kab mob tshwm sim los ntawm kev sib txawv ntawm caj ces (genotypic kev hloov pauv ) lossis los ntawm kev cuam tshuam ntawm ib puag ncig yam ntawm qhov kev qhia ntawm cov caj ces muaj peev xwm (phenotypic kev hloov pauv ).

Ib yam li ntawd, plaub qhov kev ntsuas ntawm kev hloov pauv yog dab tsi? Muaj plaub qhov kev ntsuas uas nquag siv ntawm kev hloov pauv: lub ntau , interquartile ntau yam , variance, thiab txheem sib txawv . Hauv ob peb nqe lus tom ntej no, peb yuav saib txhua qhov ntawm plaub qhov kev ntsuas ntawm qhov sib txawv ntawm qhov nthuav dav ntxiv.

Tsuas yog li ntawd, peb qhov kev ntsuas ntawm kev hloov pauv yog dab tsi?

Cov kev ntsuas feem ntau ntawm kev hloov pauv yog qhov ntau , lub interquartile ntau (IQR), qhov sib txawv, thiab tus qauv sib txawv.

Dab tsi yog qhov tseem ceeb ntawm kev ntsuas kev hloov pauv?

Qhov tseem ceeb ntawm kev ntsuas ntawm kev hloov pauv - Kev ntsuas ntawm kev hloov pauv yog cov ntaub ntawv txheeb cais uas qhia txog qib uas cov ntaub ntawv tus lej yuav kis tau ntawm tus nqi nruab nrab. Nws tseem hu ua dispersion, scatter, kis. -

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