Dab tsi yog qhov kev tshawb nrhiav nested?
Dab tsi yog qhov kev tshawb nrhiav nested?
Anonim

Nested tsim yog a kev tshawb fawb tsim nyob rau hauv uas theem ntawm ib yam (hais, Factor B) yog hierarchically subsumed nyob rau hauv (los yog ua zes nyob rau hauv) theem ntawm lwm yam (hais, Factor A).

Xav txog qhov no, dab tsi yog qhov tsim qauv zes?

A tsim nested (qee zaum hu ua hierarchical tsim ) yog siv rau cov kev sim uas muaj kev txaus siab rau cov txheej txheem kev kho mob thiab cov kev sim ntsuas tau muab cais tawm.

Tom qab ntawd, lo lus nug yog, dab tsi yog qhov sib txawv ntawm qhov sib txawv? Qhov nominal sib txawv yog ua zes , txhais tau hais tias txhua tus nqi ntawm ib tug nominal sib txawv (cov subgroups) pom nyob rau hauv ua ke nrog tsuas yog ib tug nqi ntawm cov qib siab nominal sib txawv (cov pab pawg). Nested kev tsom xam ntawm qhov sib txawv yog qhov txuas ntxiv ntawm ib txoj kev anova uas txhua pab pawg tau muab faib ua pawg.

Yog li ntawd, nested txhais li cas hauv kev tshawb fawb?

kev kawm nested . ib kawm , feem ntau rooj plaub tswj, uas recruits kawm kawm los ntawm cov pej xeem uas nws tus yam ntxwv yog paub vim nws cov tswv cuab yog twb yog tej yam uas twb muaj lawm loj kawm (piv txwv li, ib pawg neeg sib tw kawm los yog loj randomized tswj mus sib hais).

Yuav ua li cas yog ib tug nested tsim nyob rau hauv kev txheeb cais?

Ib chav kawm ntawm kev sim tsim nyob rau hauv uas txhua theem ntawm ib qho tseem ceeb tshwm sim nrog tsuas yog ib theem ntawm lwm yam. Yam uas tsis yog ua zes hais tias hla. Yog tias txhua theem ntawm ib qho tshwm sim nrog txhua theem ntawm lwm tus, cov xwm txheej tau hais kom hla tag nrho: yog tias tsis yog, lawv tau hla ib nrab.

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