Koj pom F statistic li cas hauv Anova?
Koj pom F statistic li cas hauv Anova?

Video: Koj pom F statistic li cas hauv Anova?

Video: Koj pom F statistic li cas hauv Anova?
Video: F-Test (One-Way ANOVA) 2024, Kaum ib hlis
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Qhia qhov null hypothesis thiab alternate hypothesis. xam tus F tus nqi. Cov F Tus nqi yog xam siv cov formula F = (SSE1 -SSE2 /m) / SSE2 / n-k, qhov twg SSE = residual sum ntawm squares, m = tus naj npawb ntawm kev txwv thiab k = tus naj npawb ntawm cov kev hloov pauv ywj pheej. Nrhiav tus F Statistics (tus nqi tseem ceeb rau qhov kev xeem no).

Yog li ntawd, F statistic hauv Anova yog dab tsi?

Ib F qhov txheeb cais yog tus nqi koj tau txais thaum koj khiav ib qho ANOVA xeem los yog ib qho kev ntsuam xyuas regression kom paub seb qhov txhais tau li cas ntawm ob pawg neeg sib txawv heev.

Ib yam li ntawd, F statistic qhia koj li cas? Cov F - Txheeb cais : Variation between Sample Means / Variation With the Samples. Cov F - statistic yog xeem txheeb cais rau F - kuaj. Feem ntau, ib F - txheeb cais yog ib qho piv txwv ntawm ob qhov ntau uas xav tias yuav luag sib npaug raws li qhov tsis txaus ntseeg, uas ua rau F - txheeb cais ntawm kwv yees li 1.

Ntawm no, qhov kev xeem txheeb cais rau Anova yog dab tsi?

Cov xeem txheeb cais , siv hauv kuaj qhov sib npaug ntawm kev kho mob txhais tau tias yog: F = MST / MSE. Tus nqi tseem ceeb yog tus nqi tabular ntawm F faib, raws li qib alpha xaiv thiab qib ntawm kev ywj pheej DFT thiab DFE. Cov kev suav yog tso tawm nyob rau hauv ib qho ANOVA table, raws li nram no: ANOVA rooj.

Koj txhais li cas F statistic?

Txhais lus tag nrho F -test ntawm Qhov tseem ceeb Muab piv rau p-tus nqi rau lub F -test rau koj qhov tseem ceeb qib. Yog tias tus nqi p-nqi tsawg dua qhov qhov tseem ceeb theem, koj cov qauv ntaub ntawv muab pov thawj txaus los txiav txim siab tias koj tus qauv regression haum rau cov ntaub ntawv zoo dua li cov qauv uas tsis muaj qhov txawv txav.

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