Cov txheej txheem:

Dab tsi yog qhov kev ntsuas ntawm lub hauv paus nyiam rau cov ntaub ntawv uas tsis yog pawg?
Dab tsi yog qhov kev ntsuas ntawm lub hauv paus nyiam rau cov ntaub ntawv uas tsis yog pawg?

Video: Dab tsi yog qhov kev ntsuas ntawm lub hauv paus nyiam rau cov ntaub ntawv uas tsis yog pawg?

Video: Dab tsi yog qhov kev ntsuas ntawm lub hauv paus nyiam rau cov ntaub ntawv uas tsis yog pawg?
Video: 6 Nqi Lus Qhia Kev Ua neej ( leej twg mloog lub neej yuav zoo tuaj) 2024, Kaum ib hlis
Anonim

Lub sij hawm Central nyiam hais txog qhov nruab nrab, los yog ib txwm, tus nqi ntawm ib txheej cov ntaub ntawv , uas yog feem ntau ntsuas los ntawm kev siv peb m's: txhais tau tias, nruab nrab, thiab hom. Qhov nruab nrab, nruab nrab, thiab hom yog hu ua tus ntsuas qhov nruab nrab nyiam.

Hauv qhov no, qhov kev ntsuas ntawm lub hauv paus nyiam rau cov ntaub ntawv ua pawg yog dab tsi?

Mean, Median, Hom: Kev ntsuas ntawm Central Tendency . MEAN Mean rau Grouped Data Grouped cov ntaub ntawv yog cov cov ntaub ntawv los yog cov qhab nia uas tau teeb tsa hauv kev faib tawm zaus.

Ib yam li ntawd, koj yuav daws tau li cas rau cov ntaub ntawv ungrouped? Cov kauj ruam

  1. Sau thiab suav koj cov ntaub ntawv. Rau txhua pawg ntawm cov ntaub ntawv muaj nuj nqis, qhov nruab nrab yog qhov ntsuas ntawm tus nqi nruab nrab.
  2. Nrhiav cov lej ntawm cov ntaub ntawv muaj nuj nqis. Thawj kauj ruam ntawm kev nrhiav qhov txhais tau tias yog xam cov lej ntawm tag nrho cov ntsiab lus ntawm cov ntaub ntawv.
  3. Faib mus nrhiav qhov txhais tau tias. Thaum kawg, faib cov lej los ntawm tus lej ntawm qhov tseem ceeb.

Tsis tas li ntawd, dab tsi yog cov qauv siv los nrhiav qhov nruab nrab nruab nrab thiab hom rau ungrouped cov ntaub ntawv?

Cov ntsiab lus

  • Rau cov ntaub ntawv sib koom ua ke, peb tsis tuaj yeem pom qhov tseeb Mean, Nruab Nrab thiab Hom, peb tsuas tuaj yeem muab kwv yees.
  • Txhawm rau kwv yees tus Mean siv cov ntsiab lus nruab nrab ntawm cov chav kawm ib ntus: Kev kwv yees kwv yees = Sum ntawm (Midpoint × Zaus) Sum of Freqency.
  • Kev kwv yees siv nruab nrab: kwv yees li nruab nrab = L + (n/2) − BG × w.
  • Txhawm rau kwv yees hom siv:

Tus qauv ntawm hom yog dab tsi rau pawg cov ntaub ntawv?

Peb tus xib hwb qhia a qauv kom paub hom , uas yog Z = L1 + (F1-F0) / (2F1-F0-F2) * i qhov twg: L1 = qis txwv ntawm chav kawm modal F1 = modal chav kawm zaus. F2 = tsuas yog tom qab cov chav kawm modal zaus. F0 = nyuam qhuav dhau los ntawm cov chav kawm modal zaus.

Pom zoo: