Cov txheej txheem:

Koj ua piv txwv li cas ntawm ob pawg?
Koj ua piv txwv li cas ntawm ob pawg?

Video: Koj ua piv txwv li cas ntawm ob pawg?

Video: Koj ua piv txwv li cas ntawm ob pawg?
Video: Huab Vwj & Celesna Lor- Qhov Tawv Tawv-Nkauj Tawm Tshiab 2024, Kaum ib hlis
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Yuav Ua Li Cas Sib Piv Ob Qhov Pej Xeem

  1. Xam cov qauv proportions . rau txhua tus qauv.
  2. Nrhiav tus qhov sib txawv ntawm tus ob qauv proportions ,
  3. Xam cov qauv tag nrho kev faib ua feem .
  4. xam tus qauv yuam kev:
  5. Faib koj cov txiaj ntsig los ntawm Kauj Ruam 2 ua by koj qhov tshwm sim los ntawm Kauj Ruam 4.

Ntawm no, cov cuab yeej twg yog siv los sib piv ntau dua ob qho piv txwv piv nrog ib leeg?

Analysis ntawm Variance (ANOVA) rau kev sib piv Multiple Means Ua ntau yam ob - qauv t -tests yuav ua rau muaj kev pheej hmoo ntawm kev ua txhaum hom I yuam kev. Vim li no, ANOVAs muaj txiaj ntsig hauv sib piv (testing) peb or ntau txhais tau hais tias (pab pawg lossis qhov sib txawv) rau qhov tseem ceeb.

Ib yam li ntawd, koj tuaj yeem siv Anova rau proportions? Loj cov ntaub ntawv. Feem ntau, cov kev ntsuas parametric zoo li t-test thiab anova yuav tsum tsis txhob siv thaum qhov sib txawv ntawm qhov sib txawv kev faib ua feem data, vim kev faib ua feem cov ntaub ntawv yog los ntawm nws qhov xwm txheej ntawm 0 thiab 1, thiab feem ntau tsis nquag faib lossis homoscedastic.

Kuj paub, yog ob qhov kev faib ua feem sib txawv?

Muab piv ob proportions , zoo li sib piv ob txhais tau tias, yog ntau. Yog ob kwv yees proportions yog txawv , tej zaum nws yuav yog vim muaj kev sib txawv ntawm cov pejxeem lossis nws yuav yog vim muaj caij nyoog. Kev ntsuam xyuas kev xav tuaj yeem pab txiav txim seb qhov sib txawv ntawm qhov kwv yees proportions qhia txog qhov sib txawv ntawm cov pejxeem proportions.

Yuav ua li cas koj ntsuam xyuas proportions nyob rau hauv cov txheeb cais?

Cov txheej txheem yooj yim yog:

  1. Qhia qhov null hypothesis H0 thiab lwm txoj kev xav HA.
  2. Teem theem ntawm qhov tseem ceeb.
  3. Xam cov ntawv xeem: z = p ^ − p o p 0 (1 − p 0) n.
  4. Xam qhov p-tus nqi.
  5. Txiav txim siab. Xyuas seb puas yuav tsis lees txais qhov kev xav tsis tseeb los ntawm kev sib piv p-tus nqi rau.

Pom zoo: