Video: Dab tsi yog qhov chaw nruab nrab?
2024 Tus sau: Edward Hancock | [email protected]. Kawg hloov kho: 2023-12-16 01:32
Kawm paub - nyob nruab nrab Cov ntaub ntawv kawm tsim nyob ib ncig ntawm ib qho tshwj xeeb yam teeb meem lossis kev qhuab ntuas. Piv txwv li, a yam - nyob nruab nrab Cov ntaub ntawv kawm yuav tsom mus rau lej lossis biology. Hom kev tsim cov ntaub ntawv no feem ntau tsom rau qhov yam es tsis yog tus kheej.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog kev kawm Centered mus kom ze?
2.2.2 Kawm paub - Centered Txoj Kev Hauv cov ntsiab lus- qhov chaw nruab nrab , lub tsom xam yog nyob rau hauv tus me nyuam ntawm lub yam cov ntsiab lus los ntawm tus kws qhia ntawv rau cov tub ntxhais kawm kom tau txais xws li qhov tseem ceeb tau muab tso rau ntawm cov ncauj lus / lub tswv yim suav nrog hauv yam , nyob ib ncig ntawm uas tag nrho cov kev qhia thiab kev kawm ua ub no.
Ib yam li ntawd, cov yam ntxwv tseem ceeb ntawm cov ntaub ntawv kawm nyob hauv nruab nrab yog dab tsi? Txhua yam muaj peb yam ntxwv : ib lub cev tshwj xeeb ntawm cov ntsiab lus. nws tus kheej kev qhuab qhia kev txawj ntse (piv txwv li, txoj kev tshawb fawb, txheej txheem keeb kwm, thiab lwm yam) nws tus kheej qauv rau kev teeb tsa cov ntsiab lus.
Tsuas yog li ntawd, cov kev kawm yog dab tsi?
Cov cheeb tsam yog qhov tshwj xeeb thaj chaw ntawm cov kev qhia uas muaj cov chav kawm hauv cov koom haum kev kawm. Piv txwv li, thaum ib chav kawm raug txheeb xyuas tias yog Math 101, lej yog qhov thaj chaw kawm.
3 hom kev kawm yog dab tsi?
Muaj peb hom kev kawm : (1) qhia meej (hais cov ntaub ntawv kawm ), (2) zais (unofficial cov ntaub ntawv kawm ), thiab ( 3 ) absent los yog null (excluded cov ntaub ntawv kawm ).
Pom zoo:
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Qhov chaw thib ob piav qhia, txhais lossis txheeb xyuas cov ntaub ntawv tau los ntawm lwm qhov chaw (feem ntau yog thawj qhov chaw). Piv txwv ntawm cov ntaub ntawv thib ob suav nrog ntau phau ntawv, phau ntawv kawm, thiab cov ntawv txheeb xyuas cov ntawv tshawb fawb. Tertiary qhov chaw muab tso ua ke thiab sau cov ntsiab lus feem ntau yog qhov chaw thib ob