R-squared yuav tsum yog qhov tseeb ntawm qhov feem pua ntawm qhov sib txawv ntawm qhov sib txawv uas tus qauv piav qhia. Koj R2 yuav tsum tsis txhob siab dua lossis qis dua tus nqi no.
Tus nqi R-squared yog dab tsi?
Hauv lwm qhov chaw, cov qauv rau kev nyeem ntawv R-Squared zoo tuaj yeem siab dua, xws li 0.9 lossis siab dua. Hauv kev nyiaj txiag, ib qho R-Squared saum toj 0.7 feem ntau yuav pom tias muaj kev sib raug zoo siab, qhov kev ntsuas qis dua 0.4 yuav qhia qhov sib txheeb qis.
Nws puas zoo dua rau R-squared kom siab lossis qis?
Qhov kev txhais feem ntau ntawm r-squared yog qhov zoo ntawm tus qauv regression haum rau cov ntaub ntawv pom. Piv txwv li, r-squared ntawm 60% qhia tias 60% ntawm cov ntaub ntawv haum rau tus qauv regression. Feem ntau, ntau dua r-squared qhia qhov zoo duahaum rau tus qauv.
R-squared yuav tsawg npaum li cas?
- yog R-squared tus nqi 0.3 < r < 0.5 tus nqi no feem ntau suav tias yog qhov tsis muaj zog lossis tsis muaj txiaj ntsig loj, - yog R-squared tus nqi 0.5 < r 0.7 tus nqi no feem ntau suav hais tias muaj zog npaum li cas, Ref: Source: Moore, D. S., Notz, W.
Vim li cas R-squared thiaj li qis?
Tus nqi qis R-squared qhia tias koj tus kheej hloov pauv tsis tau piav qhia ntau hauv qhov kev hloov pauv ntawm koj qhov kev hloov pauv- tsis hais qhov tseem ceeb ntawm qhov sib txawv, qhov no yog qhia rau koj paub tias tus txheeb ze sib txawv, txawm tiasqhov tseem ceeb, tsis suav nrog ntau qhov txhais tau tias ntawm koj…
